Linux 5.3-rc8

Pull section attribute fix from Miguel Ojeda:
 "Fix Oops in Clang-compiled kernels (Nick Desaulniers)"

* tag 'compiler-attributes-for-linus-v5.3-rc8' of git://github.com/ojeda/linux:
  include/linux/compiler.h: fix Oops for Clang-compiled kernels

.clang-format

@@ -107,10 +107,13 @@ ForEachMacros:
   - 'css_for_each_descendant_post'
   - 'css_for_each_descendant_pre'
   - 'device_for_each_child_node'
+  - 'dma_fence_chain_for_each'
   - 'drm_atomic_crtc_for_each_plane'
   - 'drm_atomic_crtc_state_for_each_plane'
   - 'drm_atomic_crtc_state_for_each_plane_state'
   - 'drm_atomic_for_each_plane_damage'
+  - 'drm_client_for_each_connector_iter'
+  - 'drm_client_for_each_modeset'
   - 'drm_connector_for_each_possible_encoder'
   - 'drm_for_each_connector_iter'
   - 'drm_for_each_crtc'
@@ -126,6 +129,7 @@ ForEachMacros:
   - 'drm_mm_for_each_node_in_range'
   - 'drm_mm_for_each_node_safe'
   - 'flow_action_for_each'
+  - 'for_each_active_dev_scope'
   - 'for_each_active_drhd_unit'
   - 'for_each_active_iommu'
   - 'for_each_available_child_of_node'
@@ -153,6 +157,8 @@ ForEachMacros:
   - 'for_each_cpu_not'
   - 'for_each_cpu_wrap'
   - 'for_each_dev_addr'
+  - 'for_each_dev_scope'
+  - 'for_each_displayid_db'
   - 'for_each_dma_cap_mask'
   - 'for_each_dpcm_be'
   - 'for_each_dpcm_be_rollback'
@@ -169,6 +175,8 @@ ForEachMacros:
   - 'for_each_evictable_lru'
   - 'for_each_fib6_node_rt_rcu'
   - 'for_each_fib6_walker_rt'
+  - 'for_each_free_mem_pfn_range_in_zone'
+  - 'for_each_free_mem_pfn_range_in_zone_from'
   - 'for_each_free_mem_range'
   - 'for_each_free_mem_range_reverse'
   - 'for_each_func_rsrc'
@@ -178,6 +186,7 @@ ForEachMacros:
   - 'for_each_ip_tunnel_rcu'
   - 'for_each_irq_nr'
   - 'for_each_link_codecs'
+  - 'for_each_link_platforms'
   - 'for_each_lru'
   - 'for_each_matching_node'
   - 'for_each_matching_node_and_match'
@@ -302,7 +311,10 @@ ForEachMacros:
   - 'ide_port_for_each_present_dev'
   - 'idr_for_each_entry'
   - 'idr_for_each_entry_continue'
+  - 'idr_for_each_entry_continue_ul'
   - 'idr_for_each_entry_ul'
+  - 'in_dev_for_each_ifa_rcu'
+  - 'in_dev_for_each_ifa_rtnl'
   - 'inet_bind_bucket_for_each'
   - 'inet_lhash2_for_each_icsk_rcu'
   - 'key_for_each'
@@ -343,8 +355,6 @@ ForEachMacros:
   - 'media_device_for_each_intf'
   - 'media_device_for_each_link'
   - 'media_device_for_each_pad'
-  - 'mp_bvec_for_each_page'
-  - 'mp_bvec_for_each_segment'
   - 'nanddev_io_for_each_page'
   - 'netdev_for_each_lower_dev'
   - 'netdev_for_each_lower_private'
@@ -381,18 +391,19 @@ ForEachMacros:
   - 'radix_tree_for_each_slot'
   - 'radix_tree_for_each_tagged'
   - 'rbtree_postorder_for_each_entry_safe'
+  - 'rdma_for_each_block'
   - 'rdma_for_each_port'
   - 'resource_list_for_each_entry'
   - 'resource_list_for_each_entry_safe'
   - 'rhl_for_each_entry_rcu'
   - 'rhl_for_each_rcu'
   - 'rht_for_each'
-  - 'rht_for_each_from'
   - 'rht_for_each_entry'
   - 'rht_for_each_entry_from'
   - 'rht_for_each_entry_rcu'
   - 'rht_for_each_entry_rcu_from'
   - 'rht_for_each_entry_safe'
+  - 'rht_for_each_from'
   - 'rht_for_each_rcu'
   - 'rht_for_each_rcu_from'
   - '__rq_for_each_bio'

Documentation/process/embargoed-hardware-issues.rst

@@ -5,7 +5,7 @@ Scope
 -----
 
 Hardware issues which result in security problems are a different category
-of security bugs than pure software bugs which  only affect the Linux
+of security bugs than pure software bugs which only affect the Linux
 kernel.
 
 Hardware issues like Meltdown, Spectre, L1TF etc. must be treated
@@ -159,7 +159,7 @@ Mitigation development
 
 The initial response team sets up an encrypted mailing-list or repurposes
 an existing one if appropriate. The disclosing party should provide a list
-of contacts for all other parties who have already been, or should be
+of contacts for all other parties who have already been, or should be,
 informed about the issue. The response team contacts these parties so they
 can name experts who should be subscribed to the mailing-list.
 
@@ -217,11 +217,11 @@ an involved disclosed party. The current ambassadors list:
   AMD
   IBM
   Intel
-  Qualcomm
+  Qualcomm	Trilok Soni <tsoni@codeaurora.org>
 
-  Microsoft
+  Microsoft	Sasha Levin <sashal@kernel.org>
   VMware
-  XEN
+  Xen		Andrew Cooper <andrew.cooper3@citrix.com>
 
   Canonical	Tyler Hicks <tyhicks@canonical.com>
   Debian	Ben Hutchings <ben@decadent.org.uk>
@@ -230,8 +230,8 @@ an involved disclosed party. The current ambassadors list:
   SUSE		Jiri Kosina <jkosina@suse.cz>
 
   Amazon
-  Google
-  ============== ========================================================
+  Google	Kees Cook <keescook@chromium.org>
+  ============= ========================================================
 
 If you want your organization to be added to the ambassadors list, please
 contact the hardware security team. The nominated ambassador has to

Makefile

@@ -2,7 +2,7 @@
 VERSION = 5
 PATCHLEVEL = 3
 SUBLEVEL = 0
-EXTRAVERSION = -rc7
+EXTRAVERSION = -rc8
 NAME = Bobtail Squid
 
 # *DOCUMENTATION*

arch/arm64/boot/dts/renesas/hihope-common.dtsi

@@ -279,6 +279,7 @@
 	mmc-hs200-1_8v;
 	non-removable;
 	fixed-emmc-driver-type = <1>;
+	status = "okay";
 };
 
 &usb_extal_clk {

arch/arm64/boot/dts/renesas/r8a77995-draak.dts

@@ -97,7 +97,7 @@
 		reg = <0x0 0x48000000 0x0 0x18000000>;
 	};
 
-	reg_1p8v: regulator0 {
+	reg_1p8v: regulator-1p8v {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-1.8V";
 		regulator-min-microvolt = <1800000>;
@@ -106,7 +106,7 @@
 		regulator-always-on;
 	};
 
-	reg_3p3v: regulator1 {
+	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-3.3V";
 		regulator-min-microvolt = <3300000>;
@@ -115,7 +115,7 @@
 		regulator-always-on;
 	};
 
-	reg_12p0v: regulator1 {
+	reg_12p0v: regulator-12p0v {
 		compatible = "regulator-fixed";
 		regulator-name = "D12.0V";
 		regulator-min-microvolt = <12000000>;

arch/powerpc/kernel/process.c

@@ -101,21 +101,8 @@ static void check_if_tm_restore_required(struct task_struct *tsk)
 	}
 }
 
-static bool tm_active_with_fp(struct task_struct *tsk)
-{
-	return MSR_TM_ACTIVE(tsk->thread.regs->msr) &&
-		(tsk->thread.ckpt_regs.msr & MSR_FP);
-}
-
-static bool tm_active_with_altivec(struct task_struct *tsk)
-{
-	return MSR_TM_ACTIVE(tsk->thread.regs->msr) &&
-		(tsk->thread.ckpt_regs.msr & MSR_VEC);
-}
 #else
 static inline void check_if_tm_restore_required(struct task_struct *tsk) { }
-static inline bool tm_active_with_fp(struct task_struct *tsk) { return false; }
-static inline bool tm_active_with_altivec(struct task_struct *tsk) { return false; }
 #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
 
 bool strict_msr_control;
@@ -252,7 +239,7 @@ EXPORT_SYMBOL(enable_kernel_fp);
 
 static int restore_fp(struct task_struct *tsk)
 {
-	if (tsk->thread.load_fp || tm_active_with_fp(tsk)) {
+	if (tsk->thread.load_fp) {
 		load_fp_state(&current->thread.fp_state);
 		current->thread.load_fp++;
 		return 1;
@@ -334,8 +321,7 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread);
 
 static int restore_altivec(struct task_struct *tsk)
 {
-	if (cpu_has_feature(CPU_FTR_ALTIVEC) &&
-		(tsk->thread.load_vec || tm_active_with_altivec(tsk))) {
+	if (cpu_has_feature(CPU_FTR_ALTIVEC) && (tsk->thread.load_vec)) {
 		load_vr_state(&tsk->thread.vr_state);
 		tsk->thread.used_vr = 1;
 		tsk->thread.load_vec++;
@@ -497,13 +483,14 @@ void giveup_all(struct task_struct *tsk)
 	if (!tsk->thread.regs)
 		return;
 
+	check_if_tm_restore_required(tsk);
+
 	usermsr = tsk->thread.regs->msr;
 
 	if ((usermsr & msr_all_available) == 0)
 		return;
 
 	msr_check_and_set(msr_all_available);
-	check_if_tm_restore_required(tsk);
 
 	WARN_ON((usermsr & MSR_VSX) && !((usermsr & MSR_FP) && (usermsr & MSR_VEC)));
 

arch/powerpc/mm/nohash/tlb.c

@@ -630,7 +630,6 @@ static void early_init_this_mmu(void)
 #ifdef CONFIG_PPC_FSL_BOOK3E
 	if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
 		unsigned int num_cams;
-		int __maybe_unused cpu = smp_processor_id();
 		bool map = true;
 
 		/* use a quarter of the TLBCAM for bolted linear map */

arch/x86/hyperv/mmu.c

@@ -37,12 +37,14 @@ static inline int fill_gva_list(u64 gva_list[], int offset,
 		 * Lower 12 bits encode the number of additional
 		 * pages to flush (in addition to the 'cur' page).
 		 */
-		if (diff >= HV_TLB_FLUSH_UNIT)
+		if (diff >= HV_TLB_FLUSH_UNIT) {
 			gva_list[gva_n] |= ~PAGE_MASK;
-		else if (diff)
+			cur += HV_TLB_FLUSH_UNIT;
+		}  else if (diff) {
 			gva_list[gva_n] |= (diff - 1) >> PAGE_SHIFT;
+			cur = end;
+		}
 
-		cur += HV_TLB_FLUSH_UNIT;
 		gva_n++;
 
 	} while (cur < end);

arch/x86/include/asm/bootparam_utils.h

@@ -70,6 +70,7 @@ static void sanitize_boot_params(struct boot_params *boot_params)
 			BOOT_PARAM_PRESERVE(eddbuf_entries),
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries),
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer),
+			BOOT_PARAM_PRESERVE(secure_boot),
 			BOOT_PARAM_PRESERVE(hdr),
 			BOOT_PARAM_PRESERVE(e820_table),
 			BOOT_PARAM_PRESERVE(eddbuf),

arch/x86/include/asm/uaccess.h

@@ -444,8 +444,10 @@ __pu_label:							\
 ({									\
 	int __gu_err;							\
 	__inttype(*(ptr)) __gu_val;					\
+	__typeof__(ptr) __gu_ptr = (ptr);				\
+	__typeof__(size) __gu_size = (size);				\
 	__uaccess_begin_nospec();					\
-	__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT);	\
+	__get_user_size(__gu_val, __gu_ptr, __gu_size, __gu_err, -EFAULT);	\
 	__uaccess_end();						\
 	(x) = (__force __typeof__(*(ptr)))__gu_val;			\
 	__builtin_expect(__gu_err, 0);					\

arch/x86/kernel/apic/apic.c

@@ -1179,10 +1179,6 @@ void clear_local_APIC(void)
 	apic_write(APIC_LVT0, v | APIC_LVT_MASKED);
 	v = apic_read(APIC_LVT1);
 	apic_write(APIC_LVT1, v | APIC_LVT_MASKED);
-	if (!x2apic_enabled()) {
-		v = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
-		apic_write(APIC_LDR, v);
-	}
 	if (maxlvt >= 4) {
 		v = apic_read(APIC_LVTPC);
 		apic_write(APIC_LVTPC, v | APIC_LVT_MASKED);

drivers/dma/sh/rcar-dmac.c

@@ -192,6 +192,7 @@ struct rcar_dmac_chan {
  * @iomem: remapped I/O memory base
  * @n_channels: number of available channels
  * @channels: array of DMAC channels
+ * @channels_mask: bitfield of which DMA channels are managed by this driver
  * @modules: bitmask of client modules in use
  */
 struct rcar_dmac {
@@ -202,6 +203,7 @@ struct rcar_dmac {
 
 	unsigned int n_channels;
 	struct rcar_dmac_chan *channels;
+	unsigned int channels_mask;
 
 	DECLARE_BITMAP(modules, 256);
 };
@@ -438,7 +440,7 @@ static int rcar_dmac_init(struct rcar_dmac *dmac)
 	u16 dmaor;
 
 	/* Clear all channels and enable the DMAC globally. */
-	rcar_dmac_write(dmac, RCAR_DMACHCLR, GENMASK(dmac->n_channels - 1, 0));
+	rcar_dmac_write(dmac, RCAR_DMACHCLR, dmac->channels_mask);
 	rcar_dmac_write(dmac, RCAR_DMAOR,
 			RCAR_DMAOR_PRI_FIXED | RCAR_DMAOR_DME);
 
@@ -814,6 +816,9 @@ static void rcar_dmac_stop_all_chan(struct rcar_dmac *dmac)
 	for (i = 0; i < dmac->n_channels; ++i) {
 		struct rcar_dmac_chan *chan = &dmac->channels[i];
 
+		if (!(dmac->channels_mask & BIT(i)))
+			continue;
+
 		/* Stop and reinitialize the channel. */
 		spin_lock_irq(&chan->lock);
 		rcar_dmac_chan_halt(chan);
@@ -1776,6 +1781,8 @@ static int rcar_dmac_chan_probe(struct rcar_dmac *dmac,
 	return 0;
 }
 
+#define RCAR_DMAC_MAX_CHANNELS	32
+
 static int rcar_dmac_parse_of(struct device *dev, struct rcar_dmac *dmac)
 {
 	struct device_node *np = dev->of_node;
@@ -1787,12 +1794,16 @@ static int rcar_dmac_parse_of(struct device *dev, struct rcar_dmac *dmac)
 		return ret;
 	}
 
-	if (dmac->n_channels <= 0 || dmac->n_channels >= 100) {
+	/* The hardware and driver don't support more than 32 bits in CHCLR */
+	if (dmac->n_channels <= 0 ||
+	    dmac->n_channels >= RCAR_DMAC_MAX_CHANNELS) {
 		dev_err(dev, "invalid number of channels %u\n",
 			dmac->n_channels);
 		return -EINVAL;
 	}
 
+	dmac->channels_mask = GENMASK(dmac->n_channels - 1, 0);
+
 	return 0;
 }
 
@@ -1802,7 +1813,6 @@ static int rcar_dmac_probe(struct platform_device *pdev)
 		DMA_SLAVE_BUSWIDTH_2_BYTES | DMA_SLAVE_BUSWIDTH_4_BYTES |
 		DMA_SLAVE_BUSWIDTH_8_BYTES | DMA_SLAVE_BUSWIDTH_16_BYTES |
 		DMA_SLAVE_BUSWIDTH_32_BYTES | DMA_SLAVE_BUSWIDTH_64_BYTES;
-	unsigned int channels_offset = 0;
 	struct dma_device *engine;
 	struct rcar_dmac *dmac;
 	struct resource *mem;
@@ -1831,10 +1841,8 @@ static int rcar_dmac_probe(struct platform_device *pdev)
 	 * level we can't disable it selectively, so ignore channel 0 for now if
 	 * the device is part of an IOMMU group.
 	 */
-	if (device_iommu_mapped(&pdev->dev)) {
-		dmac->n_channels--;
-		channels_offset = 1;
-	}
+	if (device_iommu_mapped(&pdev->dev))
+		dmac->channels_mask &= ~BIT(0);
 
 	dmac->channels = devm_kcalloc(&pdev->dev, dmac->n_channels,
 				      sizeof(*dmac->channels), GFP_KERNEL);
@@ -1892,8 +1900,10 @@ static int rcar_dmac_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&engine->channels);
 
 	for (i = 0; i < dmac->n_channels; ++i) {
-		ret = rcar_dmac_chan_probe(dmac, &dmac->channels[i],
-					   i + channels_offset);
+		if (!(dmac->channels_mask & BIT(i)))
+			continue;
+
+		ret = rcar_dmac_chan_probe(dmac, &dmac->channels[i], i);
 		if (ret < 0)
 			goto error;
 	}

drivers/dma/sprd-dma.c

@@ -908,6 +908,7 @@ sprd_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 	struct sprd_dma_chn *schan = to_sprd_dma_chan(chan);
 	struct dma_slave_config *slave_cfg = &schan->slave_cfg;
 	dma_addr_t src = 0, dst = 0;
+	dma_addr_t start_src = 0, start_dst = 0;
 	struct sprd_dma_desc *sdesc;
 	struct scatterlist *sg;
 	u32 len = 0;
@@ -954,6 +955,11 @@ sprd_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 			dst = sg_dma_address(sg);
 		}
 
+		if (!i) {
+			start_src = src;
+			start_dst = dst;
+		}
+
 		/*
 		 * The link-list mode needs at least 2 link-list
 		 * configurations. If there is only one sg, it doesn't
@@ -970,8 +976,8 @@ sprd_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 		}
 	}
 
-	ret = sprd_dma_fill_desc(chan, &sdesc->chn_hw, 0, 0, src, dst, len,
-				 dir, flags, slave_cfg);
+	ret = sprd_dma_fill_desc(chan, &sdesc->chn_hw, 0, 0, start_src,
+				 start_dst, len, dir, flags, slave_cfg);
 	if (ret) {
 		kfree(sdesc);
 		return NULL;

drivers/dma/ti/dma-crossbar.c

@@ -391,8 +391,10 @@ static int ti_dra7_xbar_probe(struct platform_device *pdev)
 
 		ret = of_property_read_u32_array(node, pname, (u32 *)rsv_events,
 						 nelm * 2);
-		if (ret)
+		if (ret) {
+			kfree(rsv_events);
 			return ret;
+		}
 
 		for (i = 0; i < nelm; i++) {
 			ti_dra7_xbar_reserve(rsv_events[i][0], rsv_events[i][1],

drivers/dma/ti/omap-dma.c

@@ -1540,8 +1540,10 @@ static int omap_dma_probe(struct platform_device *pdev)
 
 		rc = devm_request_irq(&pdev->dev, irq, omap_dma_irq,
 				      IRQF_SHARED, "omap-dma-engine", od);
-		if (rc)
+		if (rc) {
+			omap_dma_free(od);
 			return rc;
+		}
 	}
 
 	if (omap_dma_glbl_read(od, CAPS_0) & CAPS_0_SUPPORT_LL123)

drivers/gpio/gpio-pca953x.c

@@ -604,10 +604,9 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
 	u8 new_irqs;
 	int level, i;
 	u8 invert_irq_mask[MAX_BANK];
-	int reg_direction[MAX_BANK];
+	u8 reg_direction[MAX_BANK];
 
-	regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction,
-			 NBANK(chip));
+	pca953x_read_regs(chip, chip->regs->direction, reg_direction);
 
 	if (chip->driver_data & PCA_PCAL) {
 		/* Enable latch on interrupt-enabled inputs */
@@ -679,7 +678,7 @@ static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending)
 	bool pending_seen = false;
 	bool trigger_seen = false;
 	u8 trigger[MAX_BANK];
-	int reg_direction[MAX_BANK];
+	u8 reg_direction[MAX_BANK];
 	int ret, i;
 
 	if (chip->driver_data & PCA_PCAL) {
@@ -710,8 +709,7 @@ static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending)
 		return false;
 
 	/* Remove output pins from the equation */
-	regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction,
-			 NBANK(chip));
+	pca953x_read_regs(chip, chip->regs->direction, reg_direction);
 	for (i = 0; i < NBANK(chip); i++)
 		cur_stat[i] &= reg_direction[i];
 
@@ -768,7 +766,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 {
 	struct i2c_client *client = chip->client;
 	struct irq_chip *irq_chip = &chip->irq_chip;
-	int reg_direction[MAX_BANK];
+	u8 reg_direction[MAX_BANK];
 	int ret, i;
 
 	if (!client->irq)
@@ -789,8 +787,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
 	 * interrupt.  We have to rely on the previous read for
 	 * this purpose.
 	 */
-	regmap_bulk_read(chip->regmap, chip->regs->direction, reg_direction,
-			 NBANK(chip));
+	pca953x_read_regs(chip, chip->regs->direction, reg_direction);
 	for (i = 0; i < NBANK(chip); i++)
 		chip->irq_stat[i] &= reg_direction[i];
 	mutex_init(&chip->irq_lock);

drivers/gpu/drm/drm_modes.c

@@ -1454,6 +1454,7 @@ static int drm_mode_parse_cmdline_refresh(const char *str, char **end_ptr,
 }
 
 static int drm_mode_parse_cmdline_extra(const char *str, int length,
+					bool freestanding,
 					const struct drm_connector *connector,
 					struct drm_cmdline_mode *mode)
 {
@@ -1462,9 +1463,15 @@ static int drm_mode_parse_cmdline_extra(const char *str, int length,
 	for (i = 0; i < length; i++) {
 		switch (str[i]) {
 		case 'i':
+			if (freestanding)
+				return -EINVAL;
+
 			mode->interlace = true;
 			break;
 		case 'm':
+			if (freestanding)
+				return -EINVAL;
+
 			mode->margins = true;
 			break;
 		case 'D':
@@ -1542,6 +1549,7 @@ static int drm_mode_parse_cmdline_res_mode(const char *str, unsigned int length,
 			if (extras) {
 				int ret = drm_mode_parse_cmdline_extra(end_ptr + i,
 								       1,
+								       false,
 								       connector,
 								       mode);
 				if (ret)
@@ -1669,6 +1677,22 @@ static int drm_mode_parse_cmdline_options(char *str, size_t len,
 	return 0;
 }
 
+static const char *drm_named_modes_whitelist[] = {
+	"NTSC",
+	"PAL",
+};
+
+static bool drm_named_mode_is_in_whitelist(const char *mode, unsigned int size)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(drm_named_modes_whitelist); i++)
+		if (!strncmp(mode, drm_named_modes_whitelist[i], size))
+			return true;
+
+	return false;
+}
+
 /**
  * drm_mode_parse_command_line_for_connector - parse command line modeline for connector
  * @mode_option: optional per connector mode option
@@ -1725,16 +1749,30 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
 	 * bunch of things:
 	 *   - We need to make sure that the first character (which
 	 *     would be our resolution in X) is a digit.
-	 *   - However, if the X resolution is missing, then we end up
-	 *     with something like x<yres>, with our first character
-	 *     being an alpha-numerical character, which would be
-	 *     considered a named mode.
+	 *   - If not, then it's either a named mode or a force on/off.
+	 *     To distinguish between the two, we need to run the
+	 *     extra parsing function, and if not, then we consider it
+	 *     a named mode.
 	 *
 	 * If this isn't enough, we should add more heuristics here,
 	 * and matching unit-tests.
 	 */
-	if (!isdigit(name[0]) && name[0] != 'x')
+	if (!isdigit(name[0]) && name[0] != 'x') {
+		unsigned int namelen = strlen(name);
+
+		/*
+		 * Only the force on/off options can be in that case,
+		 * and they all take a single character.
+		 */
+		if (namelen == 1) {
+			ret = drm_mode_parse_cmdline_extra(name, namelen, true,
+							   connector, mode);
+			if (!ret)
+				return true;
+		}
+
 		named_mode = true;
+	}
 
 	/* Try to locate the bpp and refresh specifiers, if any */
 	bpp_ptr = strchr(name, '-');
@@ -1772,6 +1810,10 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
 	if (named_mode) {
 		if (mode_end + 1 > DRM_DISPLAY_MODE_LEN)
 			return false;
+
+		if (!drm_named_mode_is_in_whitelist(name, mode_end))
+			return false;
+
 		strscpy(mode->name, name, mode_end + 1);
 	} else {
 		ret = drm_mode_parse_cmdline_res_mode(name, mode_end,
@@ -1811,7 +1853,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option,
 	    extra_ptr != options_ptr) {
 		int len = strlen(name) - (extra_ptr - name);
 
-		ret = drm_mode_parse_cmdline_extra(extra_ptr, len,
+		ret = drm_mode_parse_cmdline_extra(extra_ptr, len, false,
 						   connector, mode);
 		if (ret)
 			return false;

drivers/gpu/drm/ingenic/ingenic-drm.c

@@ -656,10 +656,9 @@ static int ingenic_drm_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	if (panel) {
+	if (panel)
 		bridge = devm_drm_panel_bridge_add(dev, panel,
-						   DRM_MODE_CONNECTOR_Unknown);
-	}
+						   DRM_MODE_CONNECTOR_DPI);
 
 	priv->dma_hwdesc = dma_alloc_coherent(dev, sizeof(*priv->dma_hwdesc),
 					      &priv->dma_hwdesc_phys,

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c

@@ -190,6 +190,9 @@ MODULE_FIRMWARE("nvidia/gp102/nvdec/scrubber.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/ucode_load.bin");
@@ -210,6 +213,9 @@ MODULE_FIRMWARE("nvidia/gp104/nvdec/scrubber.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/ucode_load.bin");
@@ -230,6 +236,9 @@ MODULE_FIRMWARE("nvidia/gp106/nvdec/scrubber.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/ucode_load.bin");
@@ -250,3 +259,6 @@ MODULE_FIRMWARE("nvidia/gp107/nvdec/scrubber.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/sig-1.bin");

drivers/gpu/drm/selftests/drm_cmdline_selftests.h

@@ -9,6 +9,13 @@
 
 #define cmdline_test(test)	selftest(test, test)
 
+cmdline_test(drm_cmdline_test_force_d_only)
+cmdline_test(drm_cmdline_test_force_D_only_dvi)
+cmdline_test(drm_cmdline_test_force_D_only_hdmi)
+cmdline_test(drm_cmdline_test_force_D_only_not_digital)
+cmdline_test(drm_cmdline_test_force_e_only)
+cmdline_test(drm_cmdline_test_margin_only)
+cmdline_test(drm_cmdline_test_interlace_only)
 cmdline_test(drm_cmdline_test_res)
 cmdline_test(drm_cmdline_test_res_missing_x)
 cmdline_test(drm_cmdline_test_res_missing_y)

drivers/gpu/drm/selftests/test-drm_cmdline_parser.c

@@ -17,6 +17,136 @@
 
 static const struct drm_connector no_connector = {};
 
+static int drm_cmdline_test_force_e_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("e",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON);
+
+	return 0;
+}
+
+static int drm_cmdline_test_force_D_only_not_digital(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON);
+
+	return 0;
+}
+
+static const struct drm_connector connector_hdmi = {
+	.connector_type	= DRM_MODE_CONNECTOR_HDMIB,
+};
+
+static int drm_cmdline_test_force_D_only_hdmi(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &connector_hdmi,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON_DIGITAL);
+
+	return 0;
+}
+
+static const struct drm_connector connector_dvi = {
+	.connector_type	= DRM_MODE_CONNECTOR_DVII,
+};
+
+static int drm_cmdline_test_force_D_only_dvi(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &connector_dvi,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON_DIGITAL);
+
+	return 0;
+}
+
+static int drm_cmdline_test_force_d_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("d",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_OFF);
+
+	return 0;
+}
+
+static int drm_cmdline_test_margin_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(drm_mode_parse_command_line_for_connector("m",
+							  &no_connector,
+							  &mode));
+
+	return 0;
+}
+
+static int drm_cmdline_test_interlace_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(drm_mode_parse_command_line_for_connector("i",
+							  &no_connector,
+							  &mode));
+
+	return 0;
+}
+
 static int drm_cmdline_test_res(void *ignored)
 {
 	struct drm_cmdline_mode mode = { };

drivers/gpu/drm/vmwgfx/vmwgfx_msg.c

@@ -353,7 +353,7 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
 				     !!(HIGH_WORD(ecx) & MESSAGE_STATUS_HB));
 		if ((HIGH_WORD(ebx) & MESSAGE_STATUS_SUCCESS) == 0) {
 			kfree(reply);
-
+			reply = NULL;
 			if ((HIGH_WORD(ebx) & MESSAGE_STATUS_CPT) != 0) {
 				/* A checkpoint occurred. Retry. */
 				continue;
@@ -377,7 +377,7 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
 
 		if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0) {
 			kfree(reply);
-
+			reply = NULL;
 			if ((HIGH_WORD(ecx) & MESSAGE_STATUS_CPT) != 0) {
 				/* A checkpoint occurred. Retry. */
 				continue;
@@ -389,10 +389,8 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
 		break;
 	}
 
-	if (retries == RETRIES) {
-		kfree(reply);
+	if (!reply)
 		return -EINVAL;
-	}
 
 	*msg_len = reply_len;
 	*msg     = reply;

drivers/iommu/amd_iommu.c

@@ -1143,6 +1143,17 @@ static void amd_iommu_flush_tlb_all(struct amd_iommu *iommu)
 	iommu_completion_wait(iommu);
 }
 
+static void amd_iommu_flush_tlb_domid(struct amd_iommu *iommu, u32 dom_id)
+{
+	struct iommu_cmd cmd;
+
+	build_inv_iommu_pages(&cmd, 0, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
+			      dom_id, 1);
+	iommu_queue_command(iommu, &cmd);
+
+	iommu_completion_wait(iommu);
+}
+
 static void amd_iommu_flush_all(struct amd_iommu *iommu)
 {
 	struct iommu_cmd cmd;
@@ -1424,18 +1435,21 @@ static void free_pagetable(struct protection_domain *domain)
  * another level increases the size of the address space by 9 bits to a size up
  * to 64 bits.
  */
-static bool increase_address_space(struct protection_domain *domain,
+static void increase_address_space(struct protection_domain *domain,
 				   gfp_t gfp)
 {
+	unsigned long flags;
 	u64 *pte;
 
-	if (domain->mode == PAGE_MODE_6_LEVEL)
+	spin_lock_irqsave(&domain->lock, flags);
+
+	if (WARN_ON_ONCE(domain->mode == PAGE_MODE_6_LEVEL))
 		/* address space already 64 bit large */
-		return false;
+		goto out;
 
 	pte = (void *)get_zeroed_page(gfp);
 	if (!pte)
-		return false;
+		goto out;
 
 	*pte             = PM_LEVEL_PDE(domain->mode,
 					iommu_virt_to_phys(domain->pt_root));
@@ -1443,7 +1457,10 @@ static bool increase_address_space(struct protection_domain *domain,
 	domain->mode    += 1;
 	domain->updated  = true;
 
-	return true;
+out:
+	spin_unlock_irqrestore(&domain->lock, flags);
+
+	return;
 }
 
 static u64 *alloc_pte(struct protection_domain *domain,
@@ -1873,6 +1890,7 @@ static void set_dte_entry(u16 devid, struct protection_domain *domain,
 {
 	u64 pte_root = 0;
 	u64 flags = 0;
+	u32 old_domid;
 
 	if (domain->mode != PAGE_MODE_NONE)
 		pte_root = iommu_virt_to_phys(domain->pt_root);
@@ -1922,8 +1940,20 @@ static void set_dte_entry(u16 devid, struct protection_domain *domain,
 	flags &= ~DEV_DOMID_MASK;
 	flags |= domain->id;
 
+	old_domid = amd_iommu_dev_table[devid].data[1] & DEV_DOMID_MASK;
 	amd_iommu_dev_table[devid].data[1]  = flags;
 	amd_iommu_dev_table[devid].data[0]  = pte_root;
+
+	/*
+	 * A kdump kernel might be replacing a domain ID that was copied from
+	 * the previous kernel--if so, it needs to flush the translation cache
+	 * entries for the old domain ID that is being overwritten
+	 */
+	if (old_domid) {
+		struct amd_iommu *iommu = amd_iommu_rlookup_table[devid];
+
+		amd_iommu_flush_tlb_domid(iommu, old_domid);
+	}
 }
 
 static void clear_dte_entry(u16 devid)

drivers/iommu/intel-iommu.c

@@ -339,6 +339,8 @@ static void domain_exit(struct dmar_domain *domain);
 static void domain_remove_dev_info(struct dmar_domain *domain);
 static void dmar_remove_one_dev_info(struct device *dev);
 static void __dmar_remove_one_dev_info(struct device_domain_info *info);
+static void domain_context_clear(struct intel_iommu *iommu,
+				 struct device *dev);
 static int domain_detach_iommu(struct dmar_domain *domain,
 			       struct intel_iommu *iommu);
 static bool device_is_rmrr_locked(struct device *dev);
@@ -2105,9 +2107,26 @@ out_unlock:
 	return ret;
 }
 
+struct domain_context_mapping_data {
+	struct dmar_domain *domain;
+	struct intel_iommu *iommu;
+	struct pasid_table *table;
+};
+
+static int domain_context_mapping_cb(struct pci_dev *pdev,
+				     u16 alias, void *opaque)
+{
+	struct domain_context_mapping_data *data = opaque;
+
+	return domain_context_mapping_one(data->domain, data->iommu,
+					  data->table, PCI_BUS_NUM(alias),
+					  alias & 0xff);
+}
+
 static int
 domain_context_mapping(struct dmar_domain *domain, struct device *dev)
 {
+	struct domain_context_mapping_data data;
 	struct pasid_table *table;
 	struct intel_iommu *iommu;
 	u8 bus, devfn;
@@ -2117,7 +2136,17 @@ domain_context_mapping(struct dmar_domain *domain, struct device *dev)
 		return -ENODEV;
 
 	table = intel_pasid_get_table(dev);
-	return domain_context_mapping_one(domain, iommu, table, bus, devfn);
+
+	if (!dev_is_pci(dev))
+		return domain_context_mapping_one(domain, iommu, table,
+						  bus, devfn);
+
+	data.domain = domain;
+	data.iommu = iommu;
+	data.table = table;
+
+	return pci_for_each_dma_alias(to_pci_dev(dev),
+				      &domain_context_mapping_cb, &data);
 }
 
 static int domain_context_mapped_cb(struct pci_dev *pdev,
@@ -4759,6 +4788,28 @@ out_free_dmar:
 	return ret;
 }
 
+static int domain_context_clear_one_cb(struct pci_dev *pdev, u16 alias, void *opaque)
+{
+	struct intel_iommu *iommu = opaque;
+
+	domain_context_clear_one(iommu, PCI_BUS_NUM(alias), alias & 0xff);
+	return 0;
+}
+
+/*
+ * NB - intel-iommu lacks any sort of reference counting for the users of
+ * dependent devices.  If multiple endpoints have intersecting dependent
+ * devices, unbinding the driver from any one of them will possibly leave
+ * the others unable to operate.
+ */
+static void domain_context_clear(struct intel_iommu *iommu, struct device *dev)
+{
+	if (!iommu || !dev || !dev_is_pci(dev))
+		return;
+
+	pci_for_each_dma_alias(to_pci_dev(dev), &domain_context_clear_one_cb, iommu);
+}
+
 static void __dmar_remove_one_dev_info(struct device_domain_info *info)
 {
 	struct dmar_domain *domain;
@@ -4779,7 +4830,7 @@ static void __dmar_remove_one_dev_info(struct device_domain_info *info)
 					PASID_RID2PASID);
 
 		iommu_disable_dev_iotlb(info);
-		domain_context_clear_one(iommu, info->bus, info->devfn);
+		domain_context_clear(iommu, info->dev);
 		intel_pasid_free_table(info->dev);
 	}
 

drivers/iommu/intel-svm.c

@@ -100,24 +100,19 @@ int intel_svm_finish_prq(struct intel_iommu *iommu)
 }
 
 static void intel_flush_svm_range_dev (struct intel_svm *svm, struct intel_svm_dev *sdev,
-				       unsigned long address, unsigned long pages, int ih, int gl)
+				unsigned long address, unsigned long pages, int ih)
 {
 	struct qi_desc desc;
 
-	if (pages == -1) {
-		/* For global kernel pages we have to flush them in *all* PASIDs
-		 * because that's the only option the hardware gives us. Despite
-		 * the fact that they are actually only accessible through one. */
-		if (gl)
-			desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
-					QI_EIOTLB_DID(sdev->did) |
-					QI_EIOTLB_GRAN(QI_GRAN_ALL_ALL) |
-					QI_EIOTLB_TYPE;
-		else
-			desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
-					QI_EIOTLB_DID(sdev->did) |
-					QI_EIOTLB_GRAN(QI_GRAN_NONG_PASID) |
-					QI_EIOTLB_TYPE;
+	/*
+	 * Do PASID granu IOTLB invalidation if page selective capability is
+	 * not available.
+	 */
+	if (pages == -1 || !cap_pgsel_inv(svm->iommu->cap)) {
+		desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
+			QI_EIOTLB_DID(sdev->did) |
+			QI_EIOTLB_GRAN(QI_GRAN_NONG_PASID) |
+			QI_EIOTLB_TYPE;
 		desc.qw1 = 0;
 	} else {
 		int mask = ilog2(__roundup_pow_of_two(pages));
@@ -127,7 +122,6 @@ static void intel_flush_svm_range_dev (struct intel_svm *svm, struct intel_svm_d
 				QI_EIOTLB_GRAN(QI_GRAN_PSI_PASID) |
 				QI_EIOTLB_TYPE;
 		desc.qw1 = QI_EIOTLB_ADDR(address) |
-				QI_EIOTLB_GL(gl) |
 				QI_EIOTLB_IH(ih) |
 				QI_EIOTLB_AM(mask);
 	}
@@ -162,13 +156,13 @@ static void intel_flush_svm_range_dev (struct intel_svm *svm, struct intel_svm_d
 }
 
 static void intel_flush_svm_range(struct intel_svm *svm, unsigned long address,
-				  unsigned long pages, int ih, int gl)
+				unsigned long pages, int ih)
 {
 	struct intel_svm_dev *sdev;
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(sdev, &svm->devs, list)
-		intel_flush_svm_range_dev(svm, sdev, address, pages, ih, gl);
+		intel_flush_svm_range_dev(svm, sdev, address, pages, ih);
 	rcu_read_unlock();
 }
 
@@ -180,7 +174,7 @@ static void intel_invalidate_range(struct mmu_notifier *mn,
 	struct intel_svm *svm = container_of(mn, struct intel_svm, notifier);
 
 	intel_flush_svm_range(svm, start,
-			      (end - start + PAGE_SIZE - 1) >> VTD_PAGE_SHIFT, 0, 0);
+			      (end - start + PAGE_SIZE - 1) >> VTD_PAGE_SHIFT, 0);
 }
 
 static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm)
@@ -203,7 +197,7 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm)
 	rcu_read_lock();
 	list_for_each_entry_rcu(sdev, &svm->devs, list) {
 		intel_pasid_tear_down_entry(svm->iommu, sdev->dev, svm->pasid);
-		intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm);
+		intel_flush_svm_range_dev(svm, sdev, 0, -1, 0);
 	}
 	rcu_read_unlock();
 
@@ -425,7 +419,7 @@ int intel_svm_unbind_mm(struct device *dev, int pasid)
 				 * large and has to be physically contiguous. So it's
 				 * hard to be as defensive as we might like. */
 				intel_pasid_tear_down_entry(iommu, dev, svm->pasid);
-				intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm);
+				intel_flush_svm_range_dev(svm, sdev, 0, -1, 0);
 				kfree_rcu(sdev, rcu);
 
 				if (list_empty(&svm->devs)) {

drivers/mmc/core/mmc_ops.c

@@ -564,7 +564,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
 	if (index == EXT_CSD_SANITIZE_START)
 		cmd.sanitize_busy = true;
 
-	err = mmc_wait_for_cmd(host, &cmd, 0);
+	err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
 	if (err)
 		goto out;
 

drivers/net/virtio_net.c

@@ -1331,7 +1331,7 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
 		}
 	}
 
-	if (rq->vq->num_free > virtqueue_get_vring_size(rq->vq) / 2) {
+	if (rq->vq->num_free > min((unsigned int)budget, virtqueue_get_vring_size(rq->vq)) / 2) {
 		if (!try_fill_recv(vi, rq, GFP_ATOMIC))
 			schedule_delayed_work(&vi->refill, 0);
 	}

drivers/nvdimm/pfn_devs.c

@@ -655,6 +655,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 	resource_size_t start, size;
 	struct nd_region *nd_region;
 	unsigned long npfns, align;
+	u32 end_trunc;
 	struct nd_pfn_sb *pfn_sb;
 	phys_addr_t offset;
 	const char *sig;
@@ -696,6 +697,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 	size = resource_size(&nsio->res);
 	npfns = PHYS_PFN(size - SZ_8K);
 	align = max(nd_pfn->align, (1UL << SUBSECTION_SHIFT));
+	end_trunc = start + size - ALIGN_DOWN(start + size, align);
 	if (nd_pfn->mode == PFN_MODE_PMEM) {
 		/*
 		 * The altmap should be padded out to the block size used
@@ -714,7 +716,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 		return -ENXIO;
 	}
 
-	npfns = PHYS_PFN(size - offset);
+	npfns = PHYS_PFN(size - offset - end_trunc);
 	pfn_sb->mode = cpu_to_le32(nd_pfn->mode);
 	pfn_sb->dataoff = cpu_to_le64(offset);
 	pfn_sb->npfns = cpu_to_le64(npfns);
@@ -723,6 +725,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 	memcpy(pfn_sb->parent_uuid, nd_dev_to_uuid(&ndns->dev), 16);
 	pfn_sb->version_major = cpu_to_le16(1);
 	pfn_sb->version_minor = cpu_to_le16(3);
+	pfn_sb->end_trunc = cpu_to_le32(end_trunc);
 	pfn_sb->align = cpu_to_le32(nd_pfn->align);
 	checksum = nd_sb_checksum((struct nd_gen_sb *) pfn_sb);
 	pfn_sb->checksum = cpu_to_le64(checksum);

drivers/scsi/lpfc/lpfc_attr.c

@@ -5715,7 +5715,7 @@ LPFC_ATTR_RW(nvme_embed_cmd, 1, 0, 2,
  *      0    = Set nr_hw_queues by the number of CPUs or HW queues.
  *      1,128 = Manually specify the maximum nr_hw_queue value to be set,
  *
- * Value range is [0,128]. Default value is 8.
+ * Value range is [0,256]. Default value is 8.
  */
 LPFC_ATTR_R(fcp_mq_threshold, LPFC_FCP_MQ_THRESHOLD_DEF,
 	    LPFC_FCP_MQ_THRESHOLD_MIN, LPFC_FCP_MQ_THRESHOLD_MAX,

drivers/scsi/lpfc/lpfc_sli4.h

@@ -46,7 +46,7 @@
 
 /* FCP MQ queue count limiting */
 #define LPFC_FCP_MQ_THRESHOLD_MIN	0
-#define LPFC_FCP_MQ_THRESHOLD_MAX	128
+#define LPFC_FCP_MQ_THRESHOLD_MAX	256
 #define LPFC_FCP_MQ_THRESHOLD_DEF	8
 
 /* Common buffer size to accomidate SCSI and NVME IO buffers */

drivers/soc/qcom/qcom-geni-se.c

@@ -630,6 +630,9 @@ int geni_se_tx_dma_prep(struct geni_se *se, void *buf, size_t len,
 	struct geni_wrapper *wrapper = se->wrapper;
 	u32 val;
 
+	if (!wrapper)
+		return -EINVAL;
+
 	*iova = dma_map_single(wrapper->dev, buf, len, DMA_TO_DEVICE);
 	if (dma_mapping_error(wrapper->dev, *iova))
 		return -EIO;
@@ -663,6 +666,9 @@ int geni_se_rx_dma_prep(struct geni_se *se, void *buf, size_t len,
 	struct geni_wrapper *wrapper = se->wrapper;
 	u32 val;
 
+	if (!wrapper)
+		return -EINVAL;
+
 	*iova = dma_map_single(wrapper->dev, buf, len, DMA_FROM_DEVICE);
 	if (dma_mapping_error(wrapper->dev, *iova))
 		return -EIO;

drivers/vhost/test.c

@@ -22,6 +22,12 @@
  * Using this limit prevents one virtqueue from starving others. */
 #define VHOST_TEST_WEIGHT 0x80000
 
+/* Max number of packets transferred before requeueing the job.
+ * Using this limit prevents one virtqueue from starving others with
+ * pkts.
+ */
+#define VHOST_TEST_PKT_WEIGHT 256
+
 enum {
 	VHOST_TEST_VQ = 0,
 	VHOST_TEST_VQ_MAX = 1,
@@ -80,10 +86,8 @@ static void handle_vq(struct vhost_test *n)
 		}
 		vhost_add_used_and_signal(&n->dev, vq, head, 0);
 		total_len += len;
-		if (unlikely(total_len >= VHOST_TEST_WEIGHT)) {
-			vhost_poll_queue(&vq->poll);
+		if (unlikely(vhost_exceeds_weight(vq, 0, total_len)))
 			break;
-		}
 	}
 
 	mutex_unlock(&vq->mutex);
@@ -115,7 +119,8 @@ static int vhost_test_open(struct inode *inode, struct file *f)
 	dev = &n->dev;
 	vqs[VHOST_TEST_VQ] = &n->vqs[VHOST_TEST_VQ];
 	n->vqs[VHOST_TEST_VQ].handle_kick = handle_vq_kick;
-	vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX);
+	vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX, UIO_MAXIOV,
+		       VHOST_TEST_PKT_WEIGHT, VHOST_TEST_WEIGHT);
 
 	f->private_data = n;
 

drivers/vhost/vhost.c

@@ -203,7 +203,6 @@ EXPORT_SYMBOL_GPL(vhost_poll_init);
 int vhost_poll_start(struct vhost_poll *poll, struct file *file)
 {
 	__poll_t mask;
-	int ret = 0;
 
 	if (poll->wqh)
 		return 0;
@@ -213,10 +212,10 @@ int vhost_poll_start(struct vhost_poll *poll, struct file *file)
 		vhost_poll_wakeup(&poll->wait, 0, 0, poll_to_key(mask));
 	if (mask & EPOLLERR) {
 		vhost_poll_stop(poll);
-		ret = -EINVAL;
+		return -EINVAL;
 	}
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(vhost_poll_start);
 
@@ -298,160 +297,6 @@ static void vhost_vq_meta_reset(struct vhost_dev *d)
 		__vhost_vq_meta_reset(d->vqs[i]);
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_map_unprefetch(struct vhost_map *map)
-{
-	kfree(map->pages);
-	map->pages = NULL;
-	map->npages = 0;
-	map->addr = NULL;
-}
-
-static void vhost_uninit_vq_maps(struct vhost_virtqueue *vq)
-{
-	struct vhost_map *map[VHOST_NUM_ADDRS];
-	int i;
-
-	spin_lock(&vq->mmu_lock);
-	for (i = 0; i < VHOST_NUM_ADDRS; i++) {
-		map[i] = rcu_dereference_protected(vq->maps[i],
-				  lockdep_is_held(&vq->mmu_lock));
-		if (map[i])
-			rcu_assign_pointer(vq->maps[i], NULL);
-	}
-	spin_unlock(&vq->mmu_lock);
-
-	synchronize_rcu();
-
-	for (i = 0; i < VHOST_NUM_ADDRS; i++)
-		if (map[i])
-			vhost_map_unprefetch(map[i]);
-
-}
-
-static void vhost_reset_vq_maps(struct vhost_virtqueue *vq)
-{
-	int i;
-
-	vhost_uninit_vq_maps(vq);
-	for (i = 0; i < VHOST_NUM_ADDRS; i++)
-		vq->uaddrs[i].size = 0;
-}
-
-static bool vhost_map_range_overlap(struct vhost_uaddr *uaddr,
-				     unsigned long start,
-				     unsigned long end)
-{
-	if (unlikely(!uaddr->size))
-		return false;
-
-	return !(end < uaddr->uaddr || start > uaddr->uaddr - 1 + uaddr->size);
-}
-
-static void vhost_invalidate_vq_start(struct vhost_virtqueue *vq,
-				      int index,
-				      unsigned long start,
-				      unsigned long end)
-{
-	struct vhost_uaddr *uaddr = &vq->uaddrs[index];
-	struct vhost_map *map;
-	int i;
-
-	if (!vhost_map_range_overlap(uaddr, start, end))
-		return;
-
-	spin_lock(&vq->mmu_lock);
-	++vq->invalidate_count;
-
-	map = rcu_dereference_protected(vq->maps[index],
-					lockdep_is_held(&vq->mmu_lock));
-	if (map) {
-		if (uaddr->write) {
-			for (i = 0; i < map->npages; i++)
-				set_page_dirty(map->pages[i]);
-		}
-		rcu_assign_pointer(vq->maps[index], NULL);
-	}
-	spin_unlock(&vq->mmu_lock);
-
-	if (map) {
-		synchronize_rcu();
-		vhost_map_unprefetch(map);
-	}
-}
-
-static void vhost_invalidate_vq_end(struct vhost_virtqueue *vq,
-				    int index,
-				    unsigned long start,
-				    unsigned long end)
-{
-	if (!vhost_map_range_overlap(&vq->uaddrs[index], start, end))
-		return;
-
-	spin_lock(&vq->mmu_lock);
-	--vq->invalidate_count;
-	spin_unlock(&vq->mmu_lock);
-}
-
-static int vhost_invalidate_range_start(struct mmu_notifier *mn,
-					const struct mmu_notifier_range *range)
-{
-	struct vhost_dev *dev = container_of(mn, struct vhost_dev,
-					     mmu_notifier);
-	int i, j;
-
-	if (!mmu_notifier_range_blockable(range))
-		return -EAGAIN;
-
-	for (i = 0; i < dev->nvqs; i++) {
-		struct vhost_virtqueue *vq = dev->vqs[i];
-
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			vhost_invalidate_vq_start(vq, j,
-						  range->start,
-						  range->end);
-	}
-
-	return 0;
-}
-
-static void vhost_invalidate_range_end(struct mmu_notifier *mn,
-				       const struct mmu_notifier_range *range)
-{
-	struct vhost_dev *dev = container_of(mn, struct vhost_dev,
-					     mmu_notifier);
-	int i, j;
-
-	for (i = 0; i < dev->nvqs; i++) {
-		struct vhost_virtqueue *vq = dev->vqs[i];
-
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			vhost_invalidate_vq_end(vq, j,
-						range->start,
-						range->end);
-	}
-}
-
-static const struct mmu_notifier_ops vhost_mmu_notifier_ops = {
-	.invalidate_range_start = vhost_invalidate_range_start,
-	.invalidate_range_end = vhost_invalidate_range_end,
-};
-
-static void vhost_init_maps(struct vhost_dev *dev)
-{
-	struct vhost_virtqueue *vq;
-	int i, j;
-
-	dev->mmu_notifier.ops = &vhost_mmu_notifier_ops;
-
-	for (i = 0; i < dev->nvqs; ++i) {
-		vq = dev->vqs[i];
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			RCU_INIT_POINTER(vq->maps[j], NULL);
-	}
-}
-#endif
-
 static void vhost_vq_reset(struct vhost_dev *dev,
 			   struct vhost_virtqueue *vq)
 {
@@ -480,11 +325,7 @@ static void vhost_vq_reset(struct vhost_dev *dev,
 	vq->busyloop_timeout = 0;
 	vq->umem = NULL;
 	vq->iotlb = NULL;
-	vq->invalidate_count = 0;
 	__vhost_vq_meta_reset(vq);
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_reset_vq_maps(vq);
-#endif
 }
 
 static int vhost_worker(void *data)
@@ -634,9 +475,7 @@ void vhost_dev_init(struct vhost_dev *dev,
 	INIT_LIST_HEAD(&dev->read_list);
 	INIT_LIST_HEAD(&dev->pending_list);
 	spin_lock_init(&dev->iotlb_lock);
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_init_maps(dev);
-#endif
+
 
 	for (i = 0; i < dev->nvqs; ++i) {
 		vq = dev->vqs[i];
@@ -645,7 +484,6 @@ void vhost_dev_init(struct vhost_dev *dev,
 		vq->heads = NULL;
 		vq->dev = dev;
 		mutex_init(&vq->mutex);
-		spin_lock_init(&vq->mmu_lock);
 		vhost_vq_reset(dev, vq);
 		if (vq->handle_kick)
 			vhost_poll_init(&vq->poll, vq->handle_kick,
@@ -725,18 +563,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
 	if (err)
 		goto err_cgroup;
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	err = mmu_notifier_register(&dev->mmu_notifier, dev->mm);
-	if (err)
-		goto err_mmu_notifier;
-#endif
-
 	return 0;
-
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-err_mmu_notifier:
-	vhost_dev_free_iovecs(dev);
-#endif
 err_cgroup:
 	kthread_stop(worker);
 	dev->worker = NULL;
@@ -827,107 +654,6 @@ static void vhost_clear_msg(struct vhost_dev *dev)
 	spin_unlock(&dev->iotlb_lock);
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_setup_uaddr(struct vhost_virtqueue *vq,
-			      int index, unsigned long uaddr,
-			      size_t size, bool write)
-{
-	struct vhost_uaddr *addr = &vq->uaddrs[index];
-
-	addr->uaddr = uaddr;
-	addr->size = size;
-	addr->write = write;
-}
-
-static void vhost_setup_vq_uaddr(struct vhost_virtqueue *vq)
-{
-	vhost_setup_uaddr(vq, VHOST_ADDR_DESC,
-			  (unsigned long)vq->desc,
-			  vhost_get_desc_size(vq, vq->num),
-			  false);
-	vhost_setup_uaddr(vq, VHOST_ADDR_AVAIL,
-			  (unsigned long)vq->avail,
-			  vhost_get_avail_size(vq, vq->num),
-			  false);
-	vhost_setup_uaddr(vq, VHOST_ADDR_USED,
-			  (unsigned long)vq->used,
-			  vhost_get_used_size(vq, vq->num),
-			  true);
-}
-
-static int vhost_map_prefetch(struct vhost_virtqueue *vq,
-			       int index)
-{
-	struct vhost_map *map;
-	struct vhost_uaddr *uaddr = &vq->uaddrs[index];
-	struct page **pages;
-	int npages = DIV_ROUND_UP(uaddr->size, PAGE_SIZE);
-	int npinned;
-	void *vaddr, *v;
-	int err;
-	int i;
-
-	spin_lock(&vq->mmu_lock);
-
-	err = -EFAULT;
-	if (vq->invalidate_count)
-		goto err;
-
-	err = -ENOMEM;
-	map = kmalloc(sizeof(*map), GFP_ATOMIC);
-	if (!map)
-		goto err;
-
-	pages = kmalloc_array(npages, sizeof(struct page *), GFP_ATOMIC);
-	if (!pages)
-		goto err_pages;
-
-	err = EFAULT;
-	npinned = __get_user_pages_fast(uaddr->uaddr, npages,
-					uaddr->write, pages);
-	if (npinned > 0)
-		release_pages(pages, npinned);
-	if (npinned != npages)
-		goto err_gup;
-
-	for (i = 0; i < npinned; i++)
-		if (PageHighMem(pages[i]))
-			goto err_gup;
-
-	vaddr = v = page_address(pages[0]);
-
-	/* For simplicity, fallback to userspace address if VA is not
-	 * contigious.
-	 */
-	for (i = 1; i < npinned; i++) {
-		v += PAGE_SIZE;
-		if (v != page_address(pages[i]))
-			goto err_gup;
-	}
-
-	map->addr = vaddr + (uaddr->uaddr & (PAGE_SIZE - 1));
-	map->npages = npages;
-	map->pages = pages;
-
-	rcu_assign_pointer(vq->maps[index], map);
-	/* No need for a synchronize_rcu(). This function should be
-	 * called by dev->worker so we are serialized with all
-	 * readers.
-	 */
-	spin_unlock(&vq->mmu_lock);
-
-	return 0;
-
-err_gup:
-	kfree(pages);
-err_pages:
-	kfree(map);
-err:
-	spin_unlock(&vq->mmu_lock);
-	return err;
-}
-#endif
-
 void vhost_dev_cleanup(struct vhost_dev *dev)
 {
 	int i;
@@ -957,16 +683,8 @@ void vhost_dev_cleanup(struct vhost_dev *dev)
 		kthread_stop(dev->worker);
 		dev->worker = NULL;
 	}
-	if (dev->mm) {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-		mmu_notifier_unregister(&dev->mmu_notifier, dev->mm);
-#endif
+	if (dev->mm)
 		mmput(dev->mm);
-	}
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	for (i = 0; i < dev->nvqs; i++)
-		vhost_uninit_vq_maps(dev->vqs[i]);
-#endif
 	dev->mm = NULL;
 }
 EXPORT_SYMBOL_GPL(vhost_dev_cleanup);
@@ -1195,26 +913,6 @@ static inline void __user *__vhost_get_user(struct vhost_virtqueue *vq,
 
 static inline int vhost_put_avail_event(struct vhost_virtqueue *vq)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			*((__virtio16 *)&used->ring[vq->num]) =
-				cpu_to_vhost16(vq, vq->avail_idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
 			      vhost_avail_event(vq));
 }
@@ -1223,27 +921,6 @@ static inline int vhost_put_used(struct vhost_virtqueue *vq,
 				 struct vring_used_elem *head, int idx,
 				 int count)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-	size_t size;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			size = count * sizeof(*head);
-			memcpy(used->ring + idx, head, size);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_copy_to_user(vq, vq->used->ring + idx, head,
 				  count * sizeof(*head));
 }
@@ -1251,25 +928,6 @@ static inline int vhost_put_used(struct vhost_virtqueue *vq,
 static inline int vhost_put_used_flags(struct vhost_virtqueue *vq)
 
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			used->flags = cpu_to_vhost16(vq, vq->used_flags);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->used_flags),
 			      &vq->used->flags);
 }
@@ -1277,25 +935,6 @@ static inline int vhost_put_used_flags(struct vhost_virtqueue *vq)
 static inline int vhost_put_used_idx(struct vhost_virtqueue *vq)
 
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			used->idx = cpu_to_vhost16(vq, vq->last_used_idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->last_used_idx),
 			      &vq->used->idx);
 }
@@ -1341,50 +980,12 @@ static void vhost_dev_unlock_vqs(struct vhost_dev *d)
 static inline int vhost_get_avail_idx(struct vhost_virtqueue *vq,
 				      __virtio16 *idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*idx = avail->idx;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *idx, &vq->avail->idx);
 }
 
 static inline int vhost_get_avail_head(struct vhost_virtqueue *vq,
 				       __virtio16 *head, int idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*head = avail->ring[idx & (vq->num - 1)];
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *head,
 			       &vq->avail->ring[idx & (vq->num - 1)]);
 }
@@ -1392,98 +993,24 @@ static inline int vhost_get_avail_head(struct vhost_virtqueue *vq,
 static inline int vhost_get_avail_flags(struct vhost_virtqueue *vq,
 					__virtio16 *flags)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*flags = avail->flags;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *flags, &vq->avail->flags);
 }
 
 static inline int vhost_get_used_event(struct vhost_virtqueue *vq,
 				       __virtio16 *event)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*event = (__virtio16)avail->ring[vq->num];
-			rcu_read_unlock();
-			return 0;
-		}
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *event, vhost_used_event(vq));
 }
 
 static inline int vhost_get_used_idx(struct vhost_virtqueue *vq,
 				     __virtio16 *idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			*idx = used->idx;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_used(vq, *idx, &vq->used->idx);
 }
 
 static inline int vhost_get_desc(struct vhost_virtqueue *vq,
 				 struct vring_desc *desc, int idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_desc *d;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_DESC]);
-		if (likely(map)) {
-			d = map->addr;
-			*desc = *(d + idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_copy_from_user(vq, desc, vq->desc + idx, sizeof(*desc));
 }
 
@@ -1824,32 +1351,12 @@ static bool iotlb_access_ok(struct vhost_virtqueue *vq,
 	return true;
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_vq_map_prefetch(struct vhost_virtqueue *vq)
-{
-	struct vhost_map __rcu *map;
-	int i;
-
-	for (i = 0; i < VHOST_NUM_ADDRS; i++) {
-		rcu_read_lock();
-		map = rcu_dereference(vq->maps[i]);
-		rcu_read_unlock();
-		if (unlikely(!map))
-			vhost_map_prefetch(vq, i);
-	}
-}
-#endif
-
 int vq_meta_prefetch(struct vhost_virtqueue *vq)
 {
 	unsigned int num = vq->num;
 
-	if (!vq->iotlb) {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-		vhost_vq_map_prefetch(vq);
-#endif
+	if (!vq->iotlb)
 		return 1;
-	}
 
 	return iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->desc,
 			       vhost_get_desc_size(vq, num), VHOST_ADDR_DESC) &&
@@ -2060,16 +1567,6 @@ static long vhost_vring_set_num_addr(struct vhost_dev *d,
 
 	mutex_lock(&vq->mutex);
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	/* Unregister MMU notifer to allow invalidation callback
-	 * can access vq->uaddrs[] without holding a lock.
-	 */
-	if (d->mm)
-		mmu_notifier_unregister(&d->mmu_notifier, d->mm);
-
-	vhost_uninit_vq_maps(vq);
-#endif
-
 	switch (ioctl) {
 	case VHOST_SET_VRING_NUM:
 		r = vhost_vring_set_num(d, vq, argp);
@@ -2081,13 +1578,6 @@ static long vhost_vring_set_num_addr(struct vhost_dev *d,
 		BUG();
 	}
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_setup_vq_uaddr(vq);
-
-	if (d->mm)
-		mmu_notifier_register(&d->mmu_notifier, d->mm);
-#endif
-
 	mutex_unlock(&vq->mutex);
 
 	return r;

drivers/vhost/vhost.h

@@ -12,9 +12,6 @@
 #include <linux/virtio_config.h>
 #include <linux/virtio_ring.h>
 #include <linux/atomic.h>
-#include <linux/pagemap.h>
-#include <linux/mmu_notifier.h>
-#include <asm/cacheflush.h>
 
 struct vhost_work;
 typedef void (*vhost_work_fn_t)(struct vhost_work *work);
@@ -83,24 +80,6 @@ enum vhost_uaddr_type {
 	VHOST_NUM_ADDRS = 3,
 };
 
-struct vhost_map {
-	int npages;
-	void *addr;
-	struct page **pages;
-};
-
-struct vhost_uaddr {
-	unsigned long uaddr;
-	size_t size;
-	bool write;
-};
-
-#if defined(CONFIG_MMU_NOTIFIER) && ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 0
-#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
-#else
-#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
-#endif
-
 /* The virtqueue structure describes a queue attached to a device. */
 struct vhost_virtqueue {
 	struct vhost_dev *dev;
@@ -111,22 +90,7 @@ struct vhost_virtqueue {
 	struct vring_desc __user *desc;
 	struct vring_avail __user *avail;
 	struct vring_used __user *used;
-
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	/* Read by memory accessors, modified by meta data
-	 * prefetching, MMU notifier and vring ioctl().
-	 * Synchonrized through mmu_lock (writers) and RCU (writers
-	 * and readers).
-	 */
-	struct vhost_map __rcu *maps[VHOST_NUM_ADDRS];
-	/* Read by MMU notifier, modified by vring ioctl(),
-	 * synchronized through MMU notifier
-	 * registering/unregistering.
-	 */
-	struct vhost_uaddr uaddrs[VHOST_NUM_ADDRS];
-#endif
 	const struct vhost_umem_node *meta_iotlb[VHOST_NUM_ADDRS];
-
 	struct file *kick;
 	struct eventfd_ctx *call_ctx;
 	struct eventfd_ctx *error_ctx;
@@ -181,8 +145,6 @@ struct vhost_virtqueue {
 	bool user_be;
 #endif
 	u32 busyloop_timeout;
-	spinlock_t mmu_lock;
-	int invalidate_count;
 };
 
 struct vhost_msg_node {
@@ -196,9 +158,6 @@ struct vhost_msg_node {
 
 struct vhost_dev {
 	struct mm_struct *mm;
-#ifdef CONFIG_MMU_NOTIFIER
-	struct mmu_notifier mmu_notifier;
-#endif
 	struct mutex mutex;
 	struct vhost_virtqueue **vqs;
 	int nvqs;

fs/configfs/configfs_internal.h

@@ -20,6 +20,15 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 
+struct configfs_fragment {
+	atomic_t frag_count;
+	struct rw_semaphore frag_sem;
+	bool frag_dead;
+};
+
+void put_fragment(struct configfs_fragment *);
+struct configfs_fragment *get_fragment(struct configfs_fragment *);
+
 struct configfs_dirent {
 	atomic_t		s_count;
 	int			s_dependent_count;
@@ -34,6 +43,7 @@ struct configfs_dirent {
 #ifdef CONFIG_LOCKDEP
 	int			s_depth;
 #endif
+	struct configfs_fragment *s_frag;
 };
 
 #define CONFIGFS_ROOT		0x0001
@@ -61,8 +71,8 @@ extern int configfs_create(struct dentry *, umode_t mode, void (*init)(struct in
 extern int configfs_create_file(struct config_item *, const struct configfs_attribute *);
 extern int configfs_create_bin_file(struct config_item *,
 				    const struct configfs_bin_attribute *);
-extern int configfs_make_dirent(struct configfs_dirent *,
-				struct dentry *, void *, umode_t, int);
+extern int configfs_make_dirent(struct configfs_dirent *, struct dentry *,
+				void *, umode_t, int, struct configfs_fragment *);
 extern int configfs_dirent_is_ready(struct configfs_dirent *);
 
 extern void configfs_hash_and_remove(struct dentry * dir, const char * name);
@@ -137,6 +147,7 @@ static inline void release_configfs_dirent(struct configfs_dirent * sd)
 {
 	if (!(sd->s_type & CONFIGFS_ROOT)) {
 		kfree(sd->s_iattr);
+		put_fragment(sd->s_frag);
 		kmem_cache_free(configfs_dir_cachep, sd);
 	}
 }

fs/configfs/dir.c

@@ -151,11 +151,38 @@ configfs_adjust_dir_dirent_depth_after_populate(struct configfs_dirent *sd)
 
 #endif /* CONFIG_LOCKDEP */
 
+static struct configfs_fragment *new_fragment(void)
+{
+	struct configfs_fragment *p;
+
+	p = kmalloc(sizeof(struct configfs_fragment), GFP_KERNEL);
+	if (p) {
+		atomic_set(&p->frag_count, 1);
+		init_rwsem(&p->frag_sem);
+		p->frag_dead = false;
+	}
+	return p;
+}
+
+void put_fragment(struct configfs_fragment *frag)
+{
+	if (frag && atomic_dec_and_test(&frag->frag_count))
+		kfree(frag);
+}
+
+struct configfs_fragment *get_fragment(struct configfs_fragment *frag)
+{
+	if (likely(frag))
+		atomic_inc(&frag->frag_count);
+	return frag;
+}
+
 /*
  * Allocates a new configfs_dirent and links it to the parent configfs_dirent
  */
 static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent *parent_sd,
-						   void *element, int type)
+						   void *element, int type,
+						   struct configfs_fragment *frag)
 {
 	struct configfs_dirent * sd;
 
@@ -175,6 +202,7 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent *paren
 		kmem_cache_free(configfs_dir_cachep, sd);
 		return ERR_PTR(-ENOENT);
 	}
+	sd->s_frag = get_fragment(frag);
 	list_add(&sd->s_sibling, &parent_sd->s_children);
 	spin_unlock(&configfs_dirent_lock);
 
@@ -209,11 +237,11 @@ static int configfs_dirent_exists(struct configfs_dirent *parent_sd,
 
 int configfs_make_dirent(struct configfs_dirent * parent_sd,
 			 struct dentry * dentry, void * element,
-			 umode_t mode, int type)
+			 umode_t mode, int type, struct configfs_fragment *frag)
 {
 	struct configfs_dirent * sd;
 
-	sd = configfs_new_dirent(parent_sd, element, type);
+	sd = configfs_new_dirent(parent_sd, element, type, frag);
 	if (IS_ERR(sd))
 		return PTR_ERR(sd);
 
@@ -260,7 +288,8 @@ static void init_symlink(struct inode * inode)
  *	until it is validated by configfs_dir_set_ready()
  */
 
-static int configfs_create_dir(struct config_item *item, struct dentry *dentry)
+static int configfs_create_dir(struct config_item *item, struct dentry *dentry,
+				struct configfs_fragment *frag)
 {
 	int error;
 	umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO;
@@ -273,7 +302,8 @@ static int configfs_create_dir(struct config_item *item, struct dentry *dentry)
 		return error;
 
 	error = configfs_make_dirent(p->d_fsdata, dentry, item, mode,
-				     CONFIGFS_DIR | CONFIGFS_USET_CREATING);
+				     CONFIGFS_DIR | CONFIGFS_USET_CREATING,
+				     frag);
 	if (unlikely(error))
 		return error;
 
@@ -338,9 +368,10 @@ int configfs_create_link(struct configfs_symlink *sl,
 {
 	int err = 0;
 	umode_t mode = S_IFLNK | S_IRWXUGO;
+	struct configfs_dirent *p = parent->d_fsdata;
 
-	err = configfs_make_dirent(parent->d_fsdata, dentry, sl, mode,
-				   CONFIGFS_ITEM_LINK);
+	err = configfs_make_dirent(p, dentry, sl, mode,
+				   CONFIGFS_ITEM_LINK, p->s_frag);
 	if (!err) {
 		err = configfs_create(dentry, mode, init_symlink);
 		if (err) {
@@ -599,7 +630,8 @@ static int populate_attrs(struct config_item *item)
 
 static int configfs_attach_group(struct config_item *parent_item,
 				 struct config_item *item,
-				 struct dentry *dentry);
+				 struct dentry *dentry,
+				 struct configfs_fragment *frag);
 static void configfs_detach_group(struct config_item *item);
 
 static void detach_groups(struct config_group *group)
@@ -647,7 +679,8 @@ static void detach_groups(struct config_group *group)
  * try using vfs_mkdir.  Just a thought.
  */
 static int create_default_group(struct config_group *parent_group,
-				struct config_group *group)
+				struct config_group *group,
+				struct configfs_fragment *frag)
 {
 	int ret;
 	struct configfs_dirent *sd;
@@ -663,7 +696,7 @@ static int create_default_group(struct config_group *parent_group,
 		d_add(child, NULL);
 
 		ret = configfs_attach_group(&parent_group->cg_item,
-					    &group->cg_item, child);
+					    &group->cg_item, child, frag);
 		if (!ret) {
 			sd = child->d_fsdata;
 			sd->s_type |= CONFIGFS_USET_DEFAULT;
@@ -677,13 +710,14 @@ static int create_default_group(struct config_group *parent_group,
 	return ret;
 }
 
-static int populate_groups(struct config_group *group)
+static int populate_groups(struct config_group *group,
+			   struct configfs_fragment *frag)
 {
 	struct config_group *new_group;
 	int ret = 0;
 
 	list_for_each_entry(new_group, &group->default_groups, group_entry) {
-		ret = create_default_group(group, new_group);
+		ret = create_default_group(group, new_group, frag);
 		if (ret) {
 			detach_groups(group);
 			break;
@@ -797,11 +831,12 @@ static void link_group(struct config_group *parent_group, struct config_group *g
  */
 static int configfs_attach_item(struct config_item *parent_item,
 				struct config_item *item,
-				struct dentry *dentry)
+				struct dentry *dentry,
+				struct configfs_fragment *frag)
 {
 	int ret;
 
-	ret = configfs_create_dir(item, dentry);
+	ret = configfs_create_dir(item, dentry, frag);
 	if (!ret) {
 		ret = populate_attrs(item);
 		if (ret) {
@@ -831,12 +866,13 @@ static void configfs_detach_item(struct config_item *item)
 
 static int configfs_attach_group(struct config_item *parent_item,
 				 struct config_item *item,
-				 struct dentry *dentry)
+				 struct dentry *dentry,
+				 struct configfs_fragment *frag)
 {
 	int ret;
 	struct configfs_dirent *sd;
 
-	ret = configfs_attach_item(parent_item, item, dentry);
+	ret = configfs_attach_item(parent_item, item, dentry, frag);
 	if (!ret) {
 		sd = dentry->d_fsdata;
 		sd->s_type |= CONFIGFS_USET_DIR;
@@ -852,7 +888,7 @@ static int configfs_attach_group(struct config_item *parent_item,
 		 */
 		inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);
 		configfs_adjust_dir_dirent_depth_before_populate(sd);
-		ret = populate_groups(to_config_group(item));
+		ret = populate_groups(to_config_group(item), frag);
 		if (ret) {
 			configfs_detach_item(item);
 			d_inode(dentry)->i_flags |= S_DEAD;
@@ -1247,6 +1283,7 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
 	struct configfs_dirent *sd;
 	const struct config_item_type *type;
 	struct module *subsys_owner = NULL, *new_item_owner = NULL;
+	struct configfs_fragment *frag;
 	char *name;
 
 	sd = dentry->d_parent->d_fsdata;
@@ -1265,6 +1302,12 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
 		goto out;
 	}
 
+	frag = new_fragment();
+	if (!frag) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	/* Get a working ref for the duration of this function */
 	parent_item = configfs_get_config_item(dentry->d_parent);
 	type = parent_item->ci_type;
@@ -1367,9 +1410,9 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
 	spin_unlock(&configfs_dirent_lock);
 
 	if (group)
-		ret = configfs_attach_group(parent_item, item, dentry);
+		ret = configfs_attach_group(parent_item, item, dentry, frag);
 	else
-		ret = configfs_attach_item(parent_item, item, dentry);
+		ret = configfs_attach_item(parent_item, item, dentry, frag);
 
 	spin_lock(&configfs_dirent_lock);
 	sd->s_type &= ~CONFIGFS_USET_IN_MKDIR;
@@ -1406,6 +1449,7 @@ out_put:
 	 * reference.
 	 */
 	config_item_put(parent_item);
+	put_fragment(frag);
 
 out:
 	return ret;
@@ -1417,6 +1461,7 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry)
 	struct config_item *item;
 	struct configfs_subsystem *subsys;
 	struct configfs_dirent *sd;
+	struct configfs_fragment *frag;
 	struct module *subsys_owner = NULL, *dead_item_owner = NULL;
 	int ret;
 
@@ -1474,6 +1519,16 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry)
 		}
 	} while (ret == -EAGAIN);
 
+	frag = sd->s_frag;
+	if (down_write_killable(&frag->frag_sem)) {
+		spin_lock(&configfs_dirent_lock);
+		configfs_detach_rollback(dentry);
+		spin_unlock(&configfs_dirent_lock);
+		return -EINTR;
+	}
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
+
 	/* Get a working ref for the duration of this function */
 	item = configfs_get_config_item(dentry);
 
@@ -1574,7 +1629,7 @@ static int configfs_dir_open(struct inode *inode, struct file *file)
 	 */
 	err = -ENOENT;
 	if (configfs_dirent_is_ready(parent_sd)) {
-		file->private_data = configfs_new_dirent(parent_sd, NULL, 0);
+		file->private_data = configfs_new_dirent(parent_sd, NULL, 0, NULL);
 		if (IS_ERR(file->private_data))
 			err = PTR_ERR(file->private_data);
 		else
@@ -1732,8 +1787,13 @@ int configfs_register_group(struct config_group *parent_group,
 {
 	struct configfs_subsystem *subsys = parent_group->cg_subsys;
 	struct dentry *parent;
+	struct configfs_fragment *frag;
 	int ret;
 
+	frag = new_fragment();
+	if (!frag)
+		return -ENOMEM;
+
 	mutex_lock(&subsys->su_mutex);
 	link_group(parent_group, group);
 	mutex_unlock(&subsys->su_mutex);
@@ -1741,7 +1801,7 @@ int configfs_register_group(struct config_group *parent_group,
 	parent = parent_group->cg_item.ci_dentry;
 
 	inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
-	ret = create_default_group(parent_group, group);
+	ret = create_default_group(parent_group, group, frag);
 	if (ret)
 		goto err_out;
 
@@ -1749,12 +1809,14 @@ int configfs_register_group(struct config_group *parent_group,
 	configfs_dir_set_ready(group->cg_item.ci_dentry->d_fsdata);
 	spin_unlock(&configfs_dirent_lock);
 	inode_unlock(d_inode(parent));
+	put_fragment(frag);
 	return 0;
 err_out:
 	inode_unlock(d_inode(parent));
 	mutex_lock(&subsys->su_mutex);
 	unlink_group(group);
 	mutex_unlock(&subsys->su_mutex);
+	put_fragment(frag);
 	return ret;
 }
 EXPORT_SYMBOL(configfs_register_group);
@@ -1770,16 +1832,12 @@ void configfs_unregister_group(struct config_group *group)
 	struct configfs_subsystem *subsys = group->cg_subsys;
 	struct dentry *dentry = group->cg_item.ci_dentry;
 	struct dentry *parent = group->cg_item.ci_parent->ci_dentry;
+	struct configfs_dirent *sd = dentry->d_fsdata;
+	struct configfs_fragment *frag = sd->s_frag;
 
-	mutex_lock(&subsys->su_mutex);
-	if (!group->cg_item.ci_parent->ci_group) {
-		/*
-		 * The parent has already been unlinked and detached
-		 * due to a rmdir.
-		 */
-		goto unlink_group;
-	}
-	mutex_unlock(&subsys->su_mutex);
+	down_write(&frag->frag_sem);
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
 
 	inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
 	spin_lock(&configfs_dirent_lock);
@@ -1796,7 +1854,6 @@ void configfs_unregister_group(struct config_group *group)
 	dput(dentry);
 
 	mutex_lock(&subsys->su_mutex);
-unlink_group:
 	unlink_group(group);
 	mutex_unlock(&subsys->su_mutex);
 }
@@ -1853,10 +1910,17 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 	struct dentry *dentry;
 	struct dentry *root;
 	struct configfs_dirent *sd;
+	struct configfs_fragment *frag;
+
+	frag = new_fragment();
+	if (!frag)
+		return -ENOMEM;
 
 	root = configfs_pin_fs();
-	if (IS_ERR(root))
+	if (IS_ERR(root)) {
+		put_fragment(frag);
 		return PTR_ERR(root);
+	}
 
 	if (!group->cg_item.ci_name)
 		group->cg_item.ci_name = group->cg_item.ci_namebuf;
@@ -1872,7 +1936,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 		d_add(dentry, NULL);
 
 		err = configfs_attach_group(sd->s_element, &group->cg_item,
-					    dentry);
+					    dentry, frag);
 		if (err) {
 			BUG_ON(d_inode(dentry));
 			d_drop(dentry);
@@ -1890,6 +1954,7 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
 		unlink_group(group);
 		configfs_release_fs();
 	}
+	put_fragment(frag);
 
 	return err;
 }
@@ -1899,12 +1964,18 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
 	struct config_group *group = &subsys->su_group;
 	struct dentry *dentry = group->cg_item.ci_dentry;
 	struct dentry *root = dentry->d_sb->s_root;
+	struct configfs_dirent *sd = dentry->d_fsdata;
+	struct configfs_fragment *frag = sd->s_frag;
 
 	if (dentry->d_parent != root) {
 		pr_err("Tried to unregister non-subsystem!\n");
 		return;
 	}
 
+	down_write(&frag->frag_sem);
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
+
 	inode_lock_nested(d_inode(root),
 			  I_MUTEX_PARENT);
 	inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);

fs/configfs/file.c

@@ -39,40 +39,44 @@ struct configfs_buffer {
 	bool			write_in_progress;
 	char			*bin_buffer;
 	int			bin_buffer_size;
+	int			cb_max_size;
+	struct config_item	*item;
+	struct module		*owner;
+	union {
+		struct configfs_attribute	*attr;
+		struct configfs_bin_attribute	*bin_attr;
+	};
 };
 
-
-/**
- *	fill_read_buffer - allocate and fill buffer from item.
- *	@dentry:	dentry pointer.
- *	@buffer:	data buffer for file.
- *
- *	Allocate @buffer->page, if it hasn't been already, then call the
- *	config_item's show() method to fill the buffer with this attribute's
- *	data.
- *	This is called only once, on the file's first read.
- */
-static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buffer)
+static inline struct configfs_fragment *to_frag(struct file *file)
 {
-	struct configfs_attribute * attr = to_attr(dentry);
-	struct config_item * item = to_item(dentry->d_parent);
-	int ret = 0;
-	ssize_t count;
+	struct configfs_dirent *sd = file->f_path.dentry->d_fsdata;
+
+	return sd->s_frag;
+}
+
+static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer)
+{
+	struct configfs_fragment *frag = to_frag(file);
+	ssize_t count = -ENOENT;
 
 	if (!buffer->page)
 		buffer->page = (char *) get_zeroed_page(GFP_KERNEL);
 	if (!buffer->page)
 		return -ENOMEM;
 
-	count = attr->show(item, buffer->page);
+	down_read(&frag->frag_sem);
+	if (!frag->frag_dead)
+		count = buffer->attr->show(buffer->item, buffer->page);
+	up_read(&frag->frag_sem);
 
-	BUG_ON(count > (ssize_t)SIMPLE_ATTR_SIZE);
-	if (count >= 0) {
-		buffer->needs_read_fill = 0;
-		buffer->count = count;
-	} else
-		ret = count;
-	return ret;
+	if (count < 0)
+		return count;
+	if (WARN_ON_ONCE(count > (ssize_t)SIMPLE_ATTR_SIZE))
+		return -EIO;
+	buffer->needs_read_fill = 0;
+	buffer->count = count;
+	return 0;
 }
 
 /**
@@ -97,12 +101,13 @@ static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buf
 static ssize_t
 configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-	struct configfs_buffer * buffer = file->private_data;
+	struct configfs_buffer *buffer = file->private_data;
 	ssize_t retval = 0;
 
 	mutex_lock(&buffer->mutex);
 	if (buffer->needs_read_fill) {
-		if ((retval = fill_read_buffer(file->f_path.dentry,buffer)))
+		retval = fill_read_buffer(file, buffer);
+		if (retval)
 			goto out;
 	}
 	pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
@@ -138,10 +143,8 @@ static ssize_t
 configfs_read_bin_file(struct file *file, char __user *buf,
 		       size_t count, loff_t *ppos)
 {
+	struct configfs_fragment *frag = to_frag(file);
 	struct configfs_buffer *buffer = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	struct config_item *item = to_item(dentry->d_parent);
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
 	ssize_t retval = 0;
 	ssize_t len = min_t(size_t, count, PAGE_SIZE);
 
@@ -156,14 +159,19 @@ configfs_read_bin_file(struct file *file, char __user *buf,
 
 	if (buffer->needs_read_fill) {
 		/* perform first read with buf == NULL to get extent */
-		len = bin_attr->read(item, NULL, 0);
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead)
+			len = buffer->bin_attr->read(buffer->item, NULL, 0);
+		else
+			len = -ENOENT;
+		up_read(&frag->frag_sem);
 		if (len <= 0) {
 			retval = len;
 			goto out;
 		}
 
 		/* do not exceed the maximum value */
-		if (bin_attr->cb_max_size && len > bin_attr->cb_max_size) {
+		if (buffer->cb_max_size && len > buffer->cb_max_size) {
 			retval = -EFBIG;
 			goto out;
 		}
@@ -176,7 +184,13 @@ configfs_read_bin_file(struct file *file, char __user *buf,
 		buffer->bin_buffer_size = len;
 
 		/* perform second read to fill buffer */
-		len = bin_attr->read(item, buffer->bin_buffer, len);
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead)
+			len = buffer->bin_attr->read(buffer->item,
+						     buffer->bin_buffer, len);
+		else
+			len = -ENOENT;
+		up_read(&frag->frag_sem);
 		if (len < 0) {
 			retval = len;
 			vfree(buffer->bin_buffer);
@@ -226,25 +240,17 @@ fill_write_buffer(struct configfs_buffer * buffer, const char __user * buf, size
 	return error ? -EFAULT : count;
 }
 
-
-/**
- *	flush_write_buffer - push buffer to config_item.
- *	@dentry:	dentry to the attribute
- *	@buffer:	data buffer for file.
- *	@count:		number of bytes
- *
- *	Get the correct pointers for the config_item and the attribute we're
- *	dealing with, then call the store() method for the attribute,
- *	passing the buffer that we acquired in fill_write_buffer().
- */
-
 static int
-flush_write_buffer(struct dentry * dentry, struct configfs_buffer * buffer, size_t count)
+flush_write_buffer(struct file *file, struct configfs_buffer *buffer, size_t count)
 {
-	struct configfs_attribute * attr = to_attr(dentry);
-	struct config_item * item = to_item(dentry->d_parent);
+	struct configfs_fragment *frag = to_frag(file);
+	int res = -ENOENT;
 
-	return attr->store(item, buffer->page, count);
+	down_read(&frag->frag_sem);
+	if (!frag->frag_dead)
+		res = buffer->attr->store(buffer->item, buffer->page, count);
+	up_read(&frag->frag_sem);
+	return res;
 }
 
 
@@ -268,13 +274,13 @@ flush_write_buffer(struct dentry * dentry, struct configfs_buffer * buffer, size
 static ssize_t
 configfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-	struct configfs_buffer * buffer = file->private_data;
+	struct configfs_buffer *buffer = file->private_data;
 	ssize_t len;
 
 	mutex_lock(&buffer->mutex);
 	len = fill_write_buffer(buffer, buf, count);
 	if (len > 0)
-		len = flush_write_buffer(file->f_path.dentry, buffer, len);
+		len = flush_write_buffer(file, buffer, len);
 	if (len > 0)
 		*ppos += len;
 	mutex_unlock(&buffer->mutex);
@@ -299,8 +305,6 @@ configfs_write_bin_file(struct file *file, const char __user *buf,
 			size_t count, loff_t *ppos)
 {
 	struct configfs_buffer *buffer = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
 	void *tbuf = NULL;
 	ssize_t len;
 
@@ -316,8 +320,8 @@ configfs_write_bin_file(struct file *file, const char __user *buf,
 	/* buffer grows? */
 	if (*ppos + count > buffer->bin_buffer_size) {
 
-		if (bin_attr->cb_max_size &&
-			*ppos + count > bin_attr->cb_max_size) {
+		if (buffer->cb_max_size &&
+			*ppos + count > buffer->cb_max_size) {
 			len = -EFBIG;
 			goto out;
 		}
@@ -349,31 +353,51 @@ out:
 	return len;
 }
 
-static int check_perm(struct inode * inode, struct file * file, int type)
+static int __configfs_open_file(struct inode *inode, struct file *file, int type)
 {
-	struct config_item *item = configfs_get_config_item(file->f_path.dentry->d_parent);
-	struct configfs_attribute * attr = to_attr(file->f_path.dentry);
-	struct configfs_bin_attribute *bin_attr = NULL;
-	struct configfs_buffer * buffer;
-	struct configfs_item_operations * ops = NULL;
-	int error = 0;
+	struct dentry *dentry = file->f_path.dentry;
+	struct configfs_fragment *frag = to_frag(file);
+	struct configfs_attribute *attr;
+	struct configfs_buffer *buffer;
+	int error;
 
-	if (!item || !attr)
-		goto Einval;
+	error = -ENOMEM;
+	buffer = kzalloc(sizeof(struct configfs_buffer), GFP_KERNEL);
+	if (!buffer)
+		goto out;
 
-	if (type & CONFIGFS_ITEM_BIN_ATTR)
-		bin_attr = to_bin_attr(file->f_path.dentry);
+	error = -ENOENT;
+	down_read(&frag->frag_sem);
+	if (unlikely(frag->frag_dead))
+		goto out_free_buffer;
 
-	/* Grab the module reference for this attribute if we have one */
-	if (!try_module_get(attr->ca_owner)) {
-		error = -ENODEV;
-		goto Done;
+	error = -EINVAL;
+	buffer->item = to_item(dentry->d_parent);
+	if (!buffer->item)
+		goto out_free_buffer;
+
+	attr = to_attr(dentry);
+	if (!attr)
+		goto out_put_item;
+
+	if (type & CONFIGFS_ITEM_BIN_ATTR) {
+		buffer->bin_attr = to_bin_attr(dentry);
+		buffer->cb_max_size = buffer->bin_attr->cb_max_size;
+	} else {
+		buffer->attr = attr;
 	}
 
-	if (item->ci_type)
-		ops = item->ci_type->ct_item_ops;
-	else
-		goto Eaccess;
+	buffer->owner = attr->ca_owner;
+	/* Grab the module reference for this attribute if we have one */
+	error = -ENODEV;
+	if (!try_module_get(buffer->owner))
+		goto out_put_item;
+
+	error = -EACCES;
+	if (!buffer->item->ci_type)
+		goto out_put_module;
+
+	buffer->ops = buffer->item->ci_type->ct_item_ops;
 
 	/* File needs write support.
 	 * The inode's perms must say it's ok,
@@ -381,13 +405,11 @@ static int check_perm(struct inode * inode, struct file * file, int type)
 	 */
 	if (file->f_mode & FMODE_WRITE) {
 		if (!(inode->i_mode & S_IWUGO))
-			goto Eaccess;
-
+			goto out_put_module;
 		if ((type & CONFIGFS_ITEM_ATTR) && !attr->store)
-			goto Eaccess;
-
-		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !bin_attr->write)
-			goto Eaccess;
+			goto out_put_module;
+		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !buffer->bin_attr->write)
+			goto out_put_module;
 	}
 
 	/* File needs read support.
@@ -396,92 +418,72 @@ static int check_perm(struct inode * inode, struct file * file, int type)
 	 */
 	if (file->f_mode & FMODE_READ) {
 		if (!(inode->i_mode & S_IRUGO))
-			goto Eaccess;
-
+			goto out_put_module;
 		if ((type & CONFIGFS_ITEM_ATTR) && !attr->show)
-			goto Eaccess;
-
-		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !bin_attr->read)
-			goto Eaccess;
+			goto out_put_module;
+		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !buffer->bin_attr->read)
+			goto out_put_module;
 	}
 
-	/* No error? Great, allocate a buffer for the file, and store it
-	 * it in file->private_data for easy access.
-	 */
-	buffer = kzalloc(sizeof(struct configfs_buffer),GFP_KERNEL);
-	if (!buffer) {
-		error = -ENOMEM;
-		goto Enomem;
-	}
 	mutex_init(&buffer->mutex);
 	buffer->needs_read_fill = 1;
 	buffer->read_in_progress = false;
 	buffer->write_in_progress = false;
-	buffer->ops = ops;
 	file->private_data = buffer;
-	goto Done;
+	up_read(&frag->frag_sem);
+	return 0;
 
- Einval:
-	error = -EINVAL;
-	goto Done;
- Eaccess:
-	error = -EACCES;
- Enomem:
-	module_put(attr->ca_owner);
- Done:
-	if (error && item)
-		config_item_put(item);
+out_put_module:
+	module_put(buffer->owner);
+out_put_item:
+	config_item_put(buffer->item);
+out_free_buffer:
+	up_read(&frag->frag_sem);
+	kfree(buffer);
+out:
 	return error;
 }
 
 static int configfs_release(struct inode *inode, struct file *filp)
 {
-	struct config_item * item = to_item(filp->f_path.dentry->d_parent);
-	struct configfs_attribute * attr = to_attr(filp->f_path.dentry);
-	struct module * owner = attr->ca_owner;
-	struct configfs_buffer * buffer = filp->private_data;
+	struct configfs_buffer *buffer = filp->private_data;
 
-	if (item)
-		config_item_put(item);
-	/* After this point, attr should not be accessed. */
-	module_put(owner);
-
-	if (buffer) {
-		if (buffer->page)
-			free_page((unsigned long)buffer->page);
-		mutex_destroy(&buffer->mutex);
-		kfree(buffer);
-	}
+	module_put(buffer->owner);
+	if (buffer->page)
+		free_page((unsigned long)buffer->page);
+	mutex_destroy(&buffer->mutex);
+	kfree(buffer);
 	return 0;
 }
 
 static int configfs_open_file(struct inode *inode, struct file *filp)
 {
-	return check_perm(inode, filp, CONFIGFS_ITEM_ATTR);
+	return __configfs_open_file(inode, filp, CONFIGFS_ITEM_ATTR);
 }
 
 static int configfs_open_bin_file(struct inode *inode, struct file *filp)
 {
-	return check_perm(inode, filp, CONFIGFS_ITEM_BIN_ATTR);
+	return __configfs_open_file(inode, filp, CONFIGFS_ITEM_BIN_ATTR);
 }
 
-static int configfs_release_bin_file(struct inode *inode, struct file *filp)
+static int configfs_release_bin_file(struct inode *inode, struct file *file)
 {
-	struct configfs_buffer *buffer = filp->private_data;
-	struct dentry *dentry = filp->f_path.dentry;
-	struct config_item *item = to_item(dentry->d_parent);
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
-	ssize_t len = 0;
-	int ret;
+	struct configfs_buffer *buffer = file->private_data;
 
 	buffer->read_in_progress = false;
 
 	if (buffer->write_in_progress) {
+		struct configfs_fragment *frag = to_frag(file);
 		buffer->write_in_progress = false;
 
-		len = bin_attr->write(item, buffer->bin_buffer,
-				buffer->bin_buffer_size);
-
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead) {
+			/* result of ->release() is ignored */
+			buffer->bin_attr->write(buffer->item,
+					buffer->bin_buffer,
+					buffer->bin_buffer_size);
+		}
+		up_read(&frag->frag_sem);
 		/* vfree on NULL is safe */
 		vfree(buffer->bin_buffer);
 		buffer->bin_buffer = NULL;
@@ -489,10 +491,8 @@ static int configfs_release_bin_file(struct inode *inode, struct file *filp)
 		buffer->needs_read_fill = 1;
 	}
 
-	ret = configfs_release(inode, filp);
-	if (len < 0)
-		return len;
-	return ret;
+	configfs_release(inode, file);
+	return 0;
 }
 
 
@@ -527,7 +527,7 @@ int configfs_create_file(struct config_item * item, const struct configfs_attrib
 
 	inode_lock_nested(d_inode(dir), I_MUTEX_NORMAL);
 	error = configfs_make_dirent(parent_sd, NULL, (void *) attr, mode,
-				     CONFIGFS_ITEM_ATTR);
+				     CONFIGFS_ITEM_ATTR, parent_sd->s_frag);
 	inode_unlock(d_inode(dir));
 
 	return error;
@@ -549,7 +549,7 @@ int configfs_create_bin_file(struct config_item *item,
 
 	inode_lock_nested(dir->d_inode, I_MUTEX_NORMAL);
 	error = configfs_make_dirent(parent_sd, NULL, (void *) bin_attr, mode,
-				     CONFIGFS_ITEM_BIN_ATTR);
+				     CONFIGFS_ITEM_BIN_ATTR, parent_sd->s_frag);
 	inode_unlock(dir->d_inode);
 
 	return error;

fs/nfs/inode.c

@@ -1403,11 +1403,12 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 	if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
 		return 0;
 
-	/* No fileid? Just exit */
-	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
-		return 0;
+	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
+		/* Only a mounted-on-fileid? Just exit */
+		if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
+			return 0;
 	/* Has the inode gone and changed behind our back? */
-	if (nfsi->fileid != fattr->fileid) {
+	} else if (nfsi->fileid != fattr->fileid) {
 		/* Is this perhaps the mounted-on fileid? */
 		if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
 		    nfsi->fileid == fattr->mounted_on_fileid)
@@ -1807,11 +1808,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			nfs_display_fhandle_hash(NFS_FH(inode)),
 			atomic_read(&inode->i_count), fattr->valid);
 
-	/* No fileid? Just exit */
-	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
-		return 0;
+	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
+		/* Only a mounted-on-fileid? Just exit */
+		if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
+			return 0;
 	/* Has the inode gone and changed behind our back? */
-	if (nfsi->fileid != fattr->fileid) {
+	} else if (nfsi->fileid != fattr->fileid) {
 		/* Is this perhaps the mounted-on fileid? */
 		if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
 		    nfsi->fileid == fattr->mounted_on_fileid)

include/linux/compiler.h

@@ -24,7 +24,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 			long ______r;					\
 			static struct ftrace_likely_data		\
 				__aligned(4)				\
-				__section("_ftrace_annotated_branch")	\
+				__section(_ftrace_annotated_branch)	\
 				______f = {				\
 				.data.func = __func__,			\
 				.data.file = __FILE__,			\
@@ -60,7 +60,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 #define __trace_if_value(cond) ({			\
 	static struct ftrace_branch_data		\
 		__aligned(4)				\
-		__section("_ftrace_branch")		\
+		__section(_ftrace_branch)		\
 		__if_trace = {				\
 			.func = __func__,		\
 			.file = __FILE__,		\
@@ -118,7 +118,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 	".popsection\n\t"
 
 /* Annotate a C jump table to allow objtool to follow the code flow */
-#define __annotate_jump_table __section(".rodata..c_jump_table")
+#define __annotate_jump_table __section(.rodata..c_jump_table)
 
 #else
 #define annotate_reachable()
@@ -298,7 +298,7 @@ unsigned long read_word_at_a_time(const void *addr)
  * visible to the compiler.
  */
 #define __ADDRESSABLE(sym) \
-	static void * __section(".discard.addressable") __used \
+	static void * __section(.discard.addressable) __used \
 		__PASTE(__addressable_##sym, __LINE__) = (void *)&sym;
 
 /**

include/linux/input/elan-i2c-ids.h

@@ -48,7 +48,7 @@ static const struct acpi_device_id elan_acpi_id[] = {
 	{ "ELAN0618", 0 },
 	{ "ELAN0619", 0 },
 	{ "ELAN061A", 0 },
-	{ "ELAN061B", 0 },
+/*	{ "ELAN061B", 0 }, not working on the Lenovo Legion Y7000 */
 	{ "ELAN061C", 0 },
 	{ "ELAN061D", 0 },
 	{ "ELAN061E", 0 },

include/linux/intel-iommu.h

@@ -346,7 +346,6 @@ enum {
 #define QI_PC_PASID_SEL		(QI_PC_TYPE | QI_PC_GRAN(1))
 
 #define QI_EIOTLB_ADDR(addr)	((u64)(addr) & VTD_PAGE_MASK)
-#define QI_EIOTLB_GL(gl)	(((u64)gl) << 7)
 #define QI_EIOTLB_IH(ih)	(((u64)ih) << 6)
 #define QI_EIOTLB_AM(am)	(((u64)am))
 #define QI_EIOTLB_PASID(pasid) 	(((u64)pasid) << 32)
@@ -378,8 +377,6 @@ enum {
 #define QI_RESP_INVALID		0x1
 #define QI_RESP_FAILURE		0xf
 
-#define QI_GRAN_ALL_ALL			0
-#define QI_GRAN_NONG_ALL		1
 #define QI_GRAN_NONG_PASID		2
 #define QI_GRAN_PSI_PASID		3
 

kernel/sched/core.c

@@ -5105,37 +5105,40 @@ out_unlock:
 	return retval;
 }
 
-static int sched_read_attr(struct sched_attr __user *uattr,
-			   struct sched_attr *attr,
-			   unsigned int usize)
+/*
+ * Copy the kernel size attribute structure (which might be larger
+ * than what user-space knows about) to user-space.
+ *
+ * Note that all cases are valid: user-space buffer can be larger or
+ * smaller than the kernel-space buffer. The usual case is that both
+ * have the same size.
+ */
+static int
+sched_attr_copy_to_user(struct sched_attr __user *uattr,
+			struct sched_attr *kattr,
+			unsigned int usize)
 {
-	int ret;
+	unsigned int ksize = sizeof(*kattr);
 
 	if (!access_ok(uattr, usize))
 		return -EFAULT;
 
 	/*
-	 * If we're handed a smaller struct than we know of,
-	 * ensure all the unknown bits are 0 - i.e. old
-	 * user-space does not get uncomplete information.
+	 * sched_getattr() ABI forwards and backwards compatibility:
+	 *
+	 * If usize == ksize then we just copy everything to user-space and all is good.
+	 *
+	 * If usize < ksize then we only copy as much as user-space has space for,
+	 * this keeps ABI compatibility as well. We skip the rest.
+	 *
+	 * If usize > ksize then user-space is using a newer version of the ABI,
+	 * which part the kernel doesn't know about. Just ignore it - tooling can
+	 * detect the kernel's knowledge of attributes from the attr->size value
+	 * which is set to ksize in this case.
 	 */
-	if (usize < sizeof(*attr)) {
-		unsigned char *addr;
-		unsigned char *end;
+	kattr->size = min(usize, ksize);
 
-		addr = (void *)attr + usize;
-		end  = (void *)attr + sizeof(*attr);
-
-		for (; addr < end; addr++) {
-			if (*addr)
-				return -EFBIG;
-		}
-
-		attr->size = usize;
-	}
-
-	ret = copy_to_user(uattr, attr, attr->size);
-	if (ret)
+	if (copy_to_user(uattr, kattr, kattr->size))
 		return -EFAULT;
 
 	return 0;
@@ -5145,20 +5148,18 @@ static int sched_read_attr(struct sched_attr __user *uattr,
  * sys_sched_getattr - similar to sched_getparam, but with sched_attr
  * @pid: the pid in question.
  * @uattr: structure containing the extended parameters.
- * @size: sizeof(attr) for fwd/bwd comp.
+ * @usize: sizeof(attr) that user-space knows about, for forwards and backwards compatibility.
  * @flags: for future extension.
  */
 SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr,
-		unsigned int, size, unsigned int, flags)
+		unsigned int, usize, unsigned int, flags)
 {
-	struct sched_attr attr = {
-		.size = sizeof(struct sched_attr),
-	};
+	struct sched_attr kattr = { };
 	struct task_struct *p;
 	int retval;
 
-	if (!uattr || pid < 0 || size > PAGE_SIZE ||
-	    size < SCHED_ATTR_SIZE_VER0 || flags)
+	if (!uattr || pid < 0 || usize > PAGE_SIZE ||
+	    usize < SCHED_ATTR_SIZE_VER0 || flags)
 		return -EINVAL;
 
 	rcu_read_lock();
@@ -5171,25 +5172,24 @@ SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr,
 	if (retval)
 		goto out_unlock;
 
-	attr.sched_policy = p->policy;
+	kattr.sched_policy = p->policy;
 	if (p->sched_reset_on_fork)
-		attr.sched_flags |= SCHED_FLAG_RESET_ON_FORK;
+		kattr.sched_flags |= SCHED_FLAG_RESET_ON_FORK;
 	if (task_has_dl_policy(p))
-		__getparam_dl(p, &attr);
+		__getparam_dl(p, &kattr);
 	else if (task_has_rt_policy(p))
-		attr.sched_priority = p->rt_priority;
+		kattr.sched_priority = p->rt_priority;
 	else
-		attr.sched_nice = task_nice(p);
+		kattr.sched_nice = task_nice(p);
 
 #ifdef CONFIG_UCLAMP_TASK
-	attr.sched_util_min = p->uclamp_req[UCLAMP_MIN].value;
-	attr.sched_util_max = p->uclamp_req[UCLAMP_MAX].value;
+	kattr.sched_util_min = p->uclamp_req[UCLAMP_MIN].value;
+	kattr.sched_util_max = p->uclamp_req[UCLAMP_MAX].value;
 #endif
 
 	rcu_read_unlock();
 
-	retval = sched_read_attr(uattr, &attr, size);
-	return retval;
+	return sched_attr_copy_to_user(uattr, &kattr, usize);
 
 out_unlock:
 	rcu_read_unlock();

kernel/sched/fair.c

@@ -4470,6 +4470,8 @@ static void __account_cfs_rq_runtime(struct cfs_rq *cfs_rq, u64 delta_exec)
 	if (likely(cfs_rq->runtime_remaining > 0))
 		return;
 
+	if (cfs_rq->throttled)
+		return;
 	/*
 	 * if we're unable to extend our runtime we resched so that the active
 	 * hierarchy can be throttled
@@ -4673,6 +4675,9 @@ static u64 distribute_cfs_runtime(struct cfs_bandwidth *cfs_b,
 		if (!cfs_rq_throttled(cfs_rq))
 			goto next;
 
+		/* By the above check, this should never be true */
+		SCHED_WARN_ON(cfs_rq->runtime_remaining > 0);
+
 		runtime = -cfs_rq->runtime_remaining + 1;
 		if (runtime > remaining)
 			runtime = remaining;

mm/balloon_compaction.c

@@ -124,7 +124,8 @@ EXPORT_SYMBOL_GPL(balloon_page_list_dequeue);
 struct page *balloon_page_alloc(void)
 {
 	struct page *page = alloc_page(balloon_mapping_gfp_mask() |
-				       __GFP_NOMEMALLOC | __GFP_NORETRY);
+				       __GFP_NOMEMALLOC | __GFP_NORETRY |
+				       __GFP_NOWARN);
 	return page;
 }
 EXPORT_SYMBOL_GPL(balloon_page_alloc);

security/keys/request_key_auth.c

@@ -66,6 +66,9 @@ static void request_key_auth_describe(const struct key *key,
 {
 	struct request_key_auth *rka = dereference_key_rcu(key);
 
+	if (!rka)
+		return;
+
 	seq_puts(m, "key:");
 	seq_puts(m, key->description);
 	if (key_is_positive(key))
@@ -83,6 +86,9 @@ static long request_key_auth_read(const struct key *key,
 	size_t datalen;
 	long ret;
 
+	if (!rka)
+		return -EKEYREVOKED;
+
 	datalen = rka->callout_len;
 	ret = datalen;
 

sound/pci/hda/hda_auto_parser.c

@@ -824,6 +824,8 @@ static void apply_fixup(struct hda_codec *codec, int id, int action, int depth)
 	while (id >= 0) {
 		const struct hda_fixup *fix = codec->fixup_list + id;
 
+		if (++depth > 10)
+			break;
 		if (fix->chained_before)
 			apply_fixup(codec, fix->chain_id, action, depth + 1);
 
@@ -863,8 +865,6 @@ static void apply_fixup(struct hda_codec *codec, int id, int action, int depth)
 		}
 		if (!fix->chained || fix->chained_before)
 			break;
-		if (++depth > 10)
-			break;
 		id = fix->chain_id;
 	}
 }

sound/pci/hda/hda_generic.c

@@ -6009,7 +6009,8 @@ int snd_hda_gen_init(struct hda_codec *codec)
 	if (spec->init_hook)
 		spec->init_hook(codec);
 
-	snd_hda_apply_verbs(codec);
+	if (!spec->skip_verbs)
+		snd_hda_apply_verbs(codec);
 
 	init_multi_out(codec);
 	init_extra_out(codec);

sound/pci/hda/hda_generic.h

@@ -243,6 +243,7 @@ struct hda_gen_spec {
 	unsigned int indep_hp_enabled:1; /* independent HP enabled */
 	unsigned int have_aamix_ctl:1;
 	unsigned int hp_mic_jack_modes:1;
+	unsigned int skip_verbs:1; /* don't apply verbs at snd_hda_gen_init() */
 
 	/* additional mute flags (only effective with auto_mute_via_amp=1) */
 	u64 mute_bits;

sound/pci/hda/patch_realtek.c

@@ -837,9 +837,11 @@ static int alc_init(struct hda_codec *codec)
 	if (spec->init_hook)
 		spec->init_hook(codec);
 
+	spec->gen.skip_verbs = 1; /* applied in below */
 	snd_hda_gen_init(codec);
 	alc_fix_pll(codec);
 	alc_auto_init_amp(codec, spec->init_amp);
+	snd_hda_apply_verbs(codec); /* apply verbs here after own init */
 
 	snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_INIT);
 
@@ -5797,6 +5799,7 @@ enum {
 	ALC286_FIXUP_ACER_AIO_HEADSET_MIC,
 	ALC256_FIXUP_ASUS_MIC_NO_PRESENCE,
 	ALC299_FIXUP_PREDATOR_SPK,
+	ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -6837,6 +6840,16 @@ static const struct hda_fixup alc269_fixups[] = {
 			{ }
 		}
 	},
+	[ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x14, 0x411111f0 }, /* disable confusing internal speaker */
+			{ 0x19, 0x04a11150 }, /* use as headset mic, without its own jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -6979,6 +6992,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x82c0, "HP G3 mini premium", ALC221_FIXUP_HP_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x103c, 0x83b9, "HP Spectre x360", ALC269_FIXUP_HP_MUTE_LED_MIC3),
 	SND_PCI_QUIRK(0x103c, 0x8497, "HP Envy x360", ALC269_FIXUP_HP_MUTE_LED_MIC3),
+	SND_PCI_QUIRK(0x103c, 0x84e7, "HP Pavilion 15", ALC269_FIXUP_HP_MUTE_LED_MIC3),
 	SND_PCI_QUIRK(0x1043, 0x103e, "ASUS X540SA", ALC256_FIXUP_ASUS_MIC),
 	SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
 	SND_PCI_QUIRK(0x1043, 0x106d, "Asus K53BE", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
@@ -6995,6 +7009,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1043, 0x1427, "Asus Zenbook UX31E", ALC269VB_FIXUP_ASUS_ZENBOOK),
 	SND_PCI_QUIRK(0x1043, 0x1517, "Asus Zenbook UX31A", ALC269VB_FIXUP_ASUS_ZENBOOK_UX31A),
 	SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
+	SND_PCI_QUIRK(0x1043, 0x17d1, "ASUS UX431FL", ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),
 	SND_PCI_QUIRK(0x1043, 0x1a30, "ASUS X705UD", ALC256_FIXUP_ASUS_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1b13, "Asus U41SV", ALC269_FIXUP_INV_DMIC),
@@ -7072,6 +7087,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x17aa, 0x312a, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x312f, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x313c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
+	SND_PCI_QUIRK(0x17aa, 0x3151, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
 	SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo B50-70", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
@@ -8946,6 +8962,7 @@ static int patch_alc680(struct hda_codec *codec)
 static const struct hda_device_id snd_hda_id_realtek[] = {
 	HDA_CODEC_ENTRY(0x10ec0215, "ALC215", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0221, "ALC221", patch_alc269),
+	HDA_CODEC_ENTRY(0x10ec0222, "ALC222", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0225, "ALC225", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0231, "ALC231", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0233, "ALC233", patch_alc269),